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MCQOPTIONS
This section includes 2637 Mcqs, each offering curated multiple-choice questions to sharpen your 7th Class knowledge and support exam preparation. Choose a topic below to get started.
| 1301. |
DIRECTIONS: On the basis of following diagram/picture answer the questions given below: Trolley X and trolley Y are joined by a stretched spring. Trolley X has twice the mass of trolley Y. When the trolleys are released, the acceleration Of X is \[\text{2 m}/{{\text{s}}^{\text{2}}}\] to the right. What is the initial acceleration of trolley Y to the left? |
| A. | \[\text{1m}/{{\text{s}}^{\text{2}}}\] |
| B. | \[\text{2 m}/{{\text{s}}^{\text{2}}}\] |
| C. | \[\text{3 m}/{{\text{s}}^{\text{2}}}\] |
| D. | \[\text{4 m}/{{\text{s}}^{\text{2}}}\] |
| Answer» E. | |
| 1302. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: A body can have acceleration even if its velocity is zero at a given instant of time. Statement 2: A body is momentarily at rest when it reverses its direction of motion. Statement 3: Acceleration is rate of change of velocity. |
| A. | Statement (1) and (3) are incorrect while statement (2) is correct. |
| B. | Statement (1) and (2) are incorrect while (3) is correct. |
| C. | All the statements are correct. |
| D. | All the statements are incorrect. |
| Answer» D. All the statements are incorrect. | |
| 1303. |
DIRECTIONS: Read the following three statements carefully and choose the correct option. Statement 1: Quartz clock gives more accurate measurement of time as compared to balance wheel clocks. Statement 2: The basic unit of time is second. Statement 3: Time from one sunrise to the next is called month |
| A. | Statement (1) and (3) are incorrect while statement (2) is correct. |
| B. | Statement (1) and (2) are incorrect while (3) is correct. |
| C. | All the statements are correct. |
| D. | All the statements are incorrect. |
| Answer» B. Statement (1) and (2) are incorrect while (3) is correct. | |
| 1304. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): The motion of a body moving in a circular path with constant speed is an example of variable acceleration. Reason (R): Acceleration varies due to change in direction. |
| A. | Both A and R is true and R is the correct explanation of A. |
| B. | Both A and R is true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» B. Both A and R is true but R is not the correct explanation of A. | |
| 1305. |
DIRECTIONS: The questions in this segment consist of two statements, one labeled as "Assertion A" and the other labeled as "Reason R". You are to examine these two statements carefully and decide if the Assertion A and Reason R are individually true and if so, whether the reason is a correct explanation of the assertion. Select your answers to these items using codes given below. Assertion (A): Velocity-time graph for an object in uniform motion along a straight path is a straight line parallel to the time axis. Reason (R): In uniform motion of an object velocity increases as the square of time elapsed. |
| A. | Both A and R is true and R is the correct explanation of A. |
| B. | Both A and R is true but R is not the correct explanation of A. |
| C. | A is true but R is false. |
| D. | A is false but R is true. |
| Answer» D. A is false but R is true. | |
| 1306. |
An instrument for measuring the distance travelled by a vehicle is: |
| A. | Speedometer |
| B. | Odometer |
| C. | Wind vane |
| D. | Ammeter |
| E. | None of these |
| Answer» C. Wind vane | |
| 1307. |
A man driving a car covered a distance of 85 meters in 25 seconds. What is the speed of the car? |
| A. | \[2.2\,\,m/s\] |
| B. | \[2.1\,\,m/s\] |
| C. | \[2.4\,\,m/s\] |
| D. | \[0.4\,\,m/s\] |
| E. | None of these |
| Answer» D. \[0.4\,\,m/s\] | |
| 1308. |
A time measuring instrument consists of a triangular metal plate, circular plate in which time can be measured by position of shadows formed. |
| A. | Hourglass |
| B. | Sundial |
| C. | Candle clock |
| D. | Pendulum clock |
| E. | None of these |
| Answer» C. Candle clock | |
| 1309. |
Which of the following does not show oscillatory motion? |
| A. | Swing |
| B. | Fan |
| C. | See-saw |
| D. | Pendulum |
| Answer» C. See-saw | |
| 1310. |
A car follows the given path as shown in figure. What will be average speed of the car? |
| A. | \[1.25\text{ }km\text{ }{{h}^{-1}}\] |
| B. | \[33.33\text{ }km\text{ }{{h}^{-1}}\] |
| C. | \[214.28\,km\,{{h}^{-1}}\] |
| D. | \[48\text{ }km\text{ }{{h}^{-1}}\] |
| Answer» D. \[48\text{ }km\text{ }{{h}^{-1}}\] | |
| 1311. |
Two pendulums of different length having different weight of bob are shown in diagrams. With reference of these two pendulums, identify the correct statement. |
| A. | Pendulum A has higher time period than pendulum B. |
| B. | Pendulum A has lower time period than pendulum B. |
| C. | Both the pendulums have same time period. |
| D. | Data is insufficient to compare time period. |
| Answer» B. Pendulum A has lower time period than pendulum B. | |
| 1312. |
A car at 7:30 am is moving at a constant speed of \[4\text{ }km\text{ }mi{{n}^{-1}}\] and an odometer reading recorded is 28568 km. What would be the odometer reading at 9:15 am? |
| A. | 28673 km |
| B. | 28988 km |
| C. | 29255 km |
| D. | 28568 km |
| Answer» C. 29255 km | |
| 1313. |
Distance travelled by truck t is 80 km in 1 hour whereas distance covered by truck y is 180 km in 2 hours. Which truck travelled faster? |
| A. | Truck t is faster than truck y. |
| B. | Truck y is faster than truck t. |
| C. | Both trucks t and y moving with equal speed. |
| D. | Either [a] or [b] |
| E. | None of these |
| Answer» C. Both trucks t and y moving with equal speed. | |
| 1314. |
Speed of a car is 30 m/s. Find its speed in km/h? |
| A. | 110 km/h |
| B. | 5.3 km/h |
| C. | 108 km/h |
| D. | 109 km/h |
| E. | None of these |
| Answer» D. 109 km/h | |
| 1315. |
Which car, moving from rest, has an average acceleration of \[2.0\text{ }m\text{ }{{s}^{-2}}\]? |
| A. | A car reaching a speed of \[10\text{ }m\text{ }{{s}^{-1}}\]in 2 s. |
| B. | A car reaching a speed of \[20\text{ }m\text{ }{{s}^{-1}}\] in 5 s. |
| C. | A car reaching a speed of \[30\text{ }m\text{ }{{s}^{-1}}\]in 10 s. |
| D. | A car reaching a speed of \[40\text{ }m\text{ }{{s}^{-1}}\] in 20 s. |
| Answer» E. | |
| 1316. |
A pendulum takes 0.5 s to make one oscillation about its mean position. How long will it take to make 5 oscillations? |
| A. | 5 s |
| B. | 7.5 s |
| C. | 2.5s |
| D. | 10s |
| Answer» D. 10s | |
| 1317. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 Take a stainless steel spoon. Bring the outer surface of the spoon near your face and look into it. Observe your image. Now observe your image using the inner side of the spoon. The inner surface of spoon acts like a |
| A. | concave mirror |
| B. | convex mirror |
| C. | plane mirror |
| D. | none of these |
| Answer» B. convex mirror | |
| 1318. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 2 Take a stainless steel spoon. Bring the outer surface of the spoon near your face and look into it. Observe your image. Now observe your image using the inner side of the spoon. The image formed, when you were looking at the outer surface of the spoon by bringing this surface near your face, was |
| A. | erect |
| B. | virtual |
| C. | smaller in size |
| D. | all of these |
| Answer» E. | |
| 1319. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 When a narrow beam of white light (sunlight or torch light) is passed through a triangular glass prism, it splits into a band of seven colours. The seven colours are in order violet, indigo, blue, green, yellow, orange and red. The red colour is deviated the least while the violet colour is deviated the most. The colour sequence can be remembered by the acronym VIBGYOR. Dispersion of white light into seven colours the phenomenon of splitting of white light into its component colours on passing through a refracting medium such as a glass prism is called dispersion of light. The pattern of the colored bands obtained on the screen is called spectrum. Choose the correct statements: |
| A. | The sunlight is white |
| B. | The sunlight consists of five colours |
| C. | The sunlight consists of seven colours |
| D. | Both (a) and (c) |
| Answer» E. | |
| 1320. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 When a narrow beam of white light (sunlight or torch light) is passed through a triangular glass prism, it splits into a band of seven colours. The seven colours are in order violet, indigo, blue, green, yellow, orange and red. The red colour is deviated the least while the violet colour is deviated the most. The colour sequence can be remembered by the acronym VIBGYOR. Dispersion of white light into seven colours the phenomenon of splitting of white light into its component colours on passing through a refracting medium such as a glass prism is called dispersion of light. The pattern of the colored bands obtained on the screen is called spectrum. White light is made of: |
| A. | 1 colour |
| B. | 3 colours |
| C. | 5 colours |
| D. | 7 colours |
| Answer» E. | |
| 1321. |
DIRECTIONS: Read the passage (s) given below and answer the questions that follow. Passage - 1 When a narrow beam of white light (sunlight or torch light) is passed through a triangular glass prism, it splits into a band of seven colours. The seven colours are in order violet, indigo, blue, green, yellow, orange and red. The red colour is deviated the least while the violet colour is deviated the most. The colour sequence can be remembered by the acronym VIBGYOR. Dispersion of white light into seven colours the phenomenon of splitting of white light into its component colours on passing through a refracting medium such as a glass prism is called dispersion of light. The pattern of the colored bands obtained on the screen is called spectrum. A spectrum is obtained by sending a beam of white light through a prism. A second prism exactly similar to the first one is placed in an inverted position with the sides parallel to the first. Now: |
| A. | a new spectrum will be formed on the screen with double the number of colours present in the previous spectrum |
| B. | new spectrum will be obtained on the screen with only half the number of colours present in the previous spectrum |
| C. | previous spectrum will disappear and we will obtain a white light formed by the fusion of the colours |
| D. | a spectrum with same number of colours present in the previous spectrum will be formed but their wave lengths will be increased twice |
| Answer» D. a spectrum with same number of colours present in the previous spectrum will be formed but their wave lengths will be increased twice | |
| 1322. |
DIRECTIONS: Match column-I with Column-11 and select the correct answer using the code given below the columns. Column - I Column - II (A) Virtual image (p) Band of seven constituent colors (B) Headlight (q) Dispersion (C) Splitting of white light (r) Real image (D) Spectrum (s) Concave mirror (E) Image on retina (t) convex mirror |
| A. | A\[\to \] (s, t), B\[\to \] (q), C\[\to \] (s), D\[\to \] (p), E\[\to \] (r) |
| B. | A\[\to \] (r), B\[\to \] (p), C\[\to \] (s), D\[\to \] (q), E\[\to \] (s, t) |
| C. | A\[\to \] (s, t), B\[\to \] (s), C\[\to \] (q), D\[\to \] (p), E\[\to \] (r) |
| D. | A\[\to \] (r), B\[\to \] (p), C\[\to \] (q), D\[\to \] (s), E\[\to \] (s, t) |
| Answer» D. A\[\to \] (r), B\[\to \] (p), C\[\to \] (q), D\[\to \] (s), E\[\to \] (s, t) | |
| 1323. |
Why a convex lens is called a converging lens? |
| A. | It bends inwards the light generally falling on it. |
| B. | It converges the light generally falling on it |
| C. | both the above are correct |
| D. | none of these is correct |
| Answer» D. none of these is correct | |
| 1324. |
We use convex mirrors as side mirrors of vehicles, because |
| A. | they produce magnified images of the objects. |
| B. | they produce erect images of the objects. |
| C. | they can spread the images over a large area |
| D. | all of the above |
| Answer» D. all of the above | |
| 1325. |
What kind of mirror provides images of large areas and is used for security? |
| A. | A plane mirror |
| B. | A concave mirror |
| C. | A convex mirror |
| D. | All of the above |
| Answer» D. All of the above | |
| 1326. |
Plane mirrors are used in the construction of: |
| A. | Periscope |
| B. | Kaleidoscope |
| C. | Telescope |
| D. | Thermo scope |
| Answer» C. Telescope | |
| 1327. |
Which of the following letters will be seen without any change in a plane mirror? |
| A. | S |
| B. | T |
| C. | L |
| D. | P |
| Answer» C. L | |
| 1328. |
In nature, rainbow is formed due to the dispersion of sunlight. The optical aid responsible for it is/are: |
| A. | molecules of carbon dioxide |
| B. | tiny droplets of water |
| C. | molecules of nitrogen dioxide |
| D. | none of the above |
| Answer» C. molecules of nitrogen dioxide | |
| 1329. |
Which is not the property of a concave lens? |
| A. | It is thicker at the edges and tapering in the middle |
| B. | It forms virtual and erect image |
| C. | It forms enlarged image |
| D. | It forms diminished image |
| Answer» D. It forms diminished image | |
| 1330. |
On the basis of following features identify the correct option. (I) Image formed is virtual and erect (II) Size of image formed is equal to size of object (III) The right side of the object appears as the left of its image and vice-versa. |
| A. | Concave mirror |
| B. | Convex mirror |
| C. | Plane mirror |
| D. | Both (a) and (b) |
| Answer» D. Both (a) and (b) | |
| 1331. |
The shape of the triangular prism |
| A. | Makes the emergent ray bend at angle to the direction of the incident ray |
| B. | Angle of deviation is the angle between the incident ray produced and the emergent ray produced |
| C. | Both (a) and (b) |
| D. | Neither (a) nor (b) |
| Answer» D. Neither (a) nor (b) | |
| 1332. |
Dispersion of light by a glass prism takes place because of |
| A. | difference in wavelengths of the constituents of light |
| B. | difference in speeds of various constituents of white light. |
| C. | scattering of light by the surface of the glass prism |
| D. | only b and a are correct |
| Answer» E. | |
| 1333. |
An inverted image can be seen in a convex mirror, |
| A. | under no circumstances |
| B. | when the object is very far from the mirror |
| C. | when the object is at a distance equal to the radius of curvature of the mirror |
| D. | when the distance of the object from the mirror is equal to the focal length of the mirror |
| Answer» B. when the object is very far from the mirror | |
| 1334. |
The sun is seen before the actual sun rise because of |
| A. | reflection |
| B. | refraction |
| C. | scattering of light |
| D. | rectilinear propagation of light |
| Answer» C. scattering of light | |
| 1335. |
Lens |
| A. | refers to a magnifying glass |
| B. | is a piece of transparent medium bounded by at least one spherical surface. |
| C. | Both the above are correct. |
| D. | None of these |
| Answer» C. Both the above are correct. | |
| 1336. |
What causes the formation of shadows? |
| A. | Rectilinear propagation of light |
| B. | Curvilinear propagation of light |
| C. | Total internal reflection |
| D. | Refraction |
| Answer» B. Curvilinear propagation of light | |
| 1337. |
A prism is a piece of glass having: |
| A. | two rectangular and 3 triangular surfaces |
| B. | two triangular and 3 rectangular surfaces |
| C. | three triangular and 3 rectangular surfaces |
| D. | none of the above |
| Answer» C. three triangular and 3 rectangular surfaces | |
| 1338. |
Which of the following produces a virtual image? |
| A. | A convex lens |
| B. | Pinhole camera |
| C. | A concave mirror when the object is placed at its centre of curvature |
| D. | Convex mirror |
| Answer» E. | |
| 1339. |
A reflecting surface is curved inwards the mirror is: |
| A. | concave |
| B. | convex |
| C. | plane |
| D. | None of these |
| Answer» B. convex | |
| 1340. |
Plane mirrors are arranged parallel to each other to get: |
| A. | a single image |
| B. | two images |
| C. | a large number of reflected images |
| D. | no image |
| Answer» D. no image | |
| 1341. |
Which of the following is true regarding convex lens? |
| A. | It forms a magnified image wherever the object is place |
| B. | It forms a magnified image only when the object is very close |
| C. | It always forms diminished and erect images |
| D. | It is not made of a transparent material |
| Answer» C. It always forms diminished and erect images | |
| 1342. |
The length of the shadow will be longest when the: |
| A. | angle between the source of light and the object is \[45{}^\circ \] |
| B. | source of light and the object are parallel to each other |
| C. | source of light and the object are perpendicular to each other |
| D. | angle between the source of light and the object is \[60{}^\circ .\] |
| Answer» D. angle between the source of light and the object is \[60{}^\circ .\] | |
| 1343. |
A ball is cut into two halves. On the outer surface of one half of the ball, a shiny aluminum foil is pasted. A candle is now placed in front of this shiny surface. The image of the candle formed by the shiny surface is: |
| A. | virtual and smaller in size |
| B. | real and smaller in size |
| C. | virtual and bigger in size |
| D. | real and bigger in size |
| Answer» B. real and smaller in size | |
| 1344. |
An air bubble in water will be act like a |
| A. | convex mirror |
| B. | concave mirror |
| C. | convex lens |
| D. | concave lens |
| Answer» E. | |
| 1345. |
The speed of light will be minimum while passing through |
| A. | glass |
| B. | air |
| C. | water |
| D. | vacuum |
| Answer» B. air | |
| 1346. |
The type of lens, which is thicker in the middle and thinner at the edges and is used as magnifying glass, is called |
| A. | convex lens |
| B. | concave lens |
| C. | diverging lens |
| D. | None of these |
| Answer» B. concave lens | |
| 1347. |
Which of the following cases is/are possible for convex lens? |
| A. | (i) and (ii) |
| B. | (ii) and (iii) |
| C. | (iii) and (i) |
| D. | Only (i) |
| Answer» C. (iii) and (i) | |
| 1348. |
The rear view mirror of a car is a plane mirror. A driver is reversing his car at a speed of 3 m/s and he sees in his rear view mirror a vehicle parked behind his car. The speed at which the image of vehicle appears to approach the driver will be |
| A. | 2m/s |
| B. | 3 m/s |
| C. | 5 m/s |
| D. | 6 m/s |
| Answer» E. | |
| 1349. |
Why do you see your smaller and erect image when you look at the shining surface of the bell of your bicycle? |
| A. | It acts as a convex lens |
| B. | It acts as a convex mirror |
| C. | It acts as a concave lens |
| D. | It acts as a concave mirror |
| Answer» C. It acts as a concave lens | |
| 1350. |
In this type of mirror the image is formed behind the mirror and the size of image is same as the size of object. It is a |
| A. | convex mirror |
| B. | concave mirror |
| C. | plane mirror |
| D. | None of these |
| Answer» D. None of these | |