MCQOPTIONS
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MCQOPTIONS
This section includes 93 Mcqs, each offering curated multiple-choice questions to sharpen your UPSEE knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
In a desert, a beetle's motion sends fast longitudinal pulses, vL = 150 ms-1, and slower transverse pulses, vS = 50 ms-1, along the sand's surface. The sand scorpion has eight legs; spread roughly in a circle of 5 cm diameter, intercepts the faster longitudinal pulses 4.0 ms earlier than the slower transverse pulse. The pray is located at a distance of: |
| A. | 3 cm |
| B. | 30 cm |
| C. | 3 m |
| D. | 30 m |
| Answer» C. 3 m | |
| 52. |
A brass ball is tied to a thin wire and swung so as to move uniformly in a horizontal circle. Which of the following statements in this regard is/are true?1) The ball moves with constant velocity2) The ball moves with constant speed3) The ball moves with constant acceleration4) The magnitude of acceleration of the ball is constantSelect the correct answer using the code given below: |
| A. | 1 only |
| B. | 1 and 3 |
| C. | 1, 2 and 4 |
| D. | 2 and 4 only |
| Answer» E. | |
| 53. |
A block of mass 5 kg is (i) pushed in case (A) and (ii) pulled in case (B), by a force F = 20 N, making an angle of 30° with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is μ = 0.2. The difference between the accelerations of the block, in case (B) and case (A) will be: (g = 10 m/s2). |
| A. | 0.4 m/s2 |
| B. | 3.2 m/s2 |
| C. | 0.8 m/s2 |
| D. | 0 m/s2 |
| Answer» D. 0 m/s2 | |
| 54. |
Power exerted by an object moving in a straight line is equal to Force multiplied by ______. |
| A. | Velocity |
| B. | Displacement |
| C. | Acceleration |
| D. | Work |
| Answer» B. Displacement | |
| 55. |
In the given velocity (V) versus time (t) graph, accelerated and decelerated motions are respectively represented by line segments |
| A. | CD and BC |
| B. | BC and AB |
| C. | CD and AB |
| D. | AB and CD |
| Answer» D. AB and CD | |
| 56. |
An unbalanced force of 90 N acts on an object and produces an acceleration of 15 m/s2 in it. Then, the mass of the object is |
| A. | 15 kg |
| B. | 90 kg |
| C. | 1350 kg |
| D. | 6 kg |
| Answer» E. | |
| 57. |
A bullet of mass 0.05kg is moving with a speed of 90 m/s and hits a heavy wooden block. The bullet enters the block and stops at a depth of 30 cm. Then the average force extended by the wooden block on the bullet to resist the motion is |
| A. | 675 N |
| B. | 150 N |
| C. | 250 N |
| D. | 270 N |
| Answer» B. 150 N | |
| 58. |
A ball is thrown vertically upward from the ground with a speed of 25.2 m/s. The ball will reach the highest point of its journey in |
| A. | 5.14 s |
| B. | 3.57 s |
| C. | 2.57 s |
| D. | 1.29 s |
| Answer» D. 1.29 s | |
| 59. |
If an object moves with constant velocity then which one of the following statements is NOT correct? |
| A. | Its motion is along a straight line |
| B. | Its speed changes with time |
| C. | Its acceleration is zero |
| D. | Its displacement increases linearly with time |
| Answer» C. Its acceleration is zero | |
| 60. |
An object is moving with uniform acceleration a. Its initial velocity is u and after time t its velocity is v. The equation of its motion is v = u + at. The velocity (along y-axis) time (along the x-axis) graph shall be a straight line |
| A. | Passing through the origin |
| B. | With x-intercept u |
| C. | With y-intercept u |
| D. | With slope u |
| Answer» D. With slope u | |
| 61. |
A constant force (F) is applied on a stationary particle of mass 'm'. The velocity attained by the particle after a certain displacement will be proportional to |
| A. | \(\frac{1}{\sqrt{m}}\) |
| B. | m |
| C. | 1/m |
| D. | \(\sqrt{m}\) |
| Answer» B. m | |
| 62. |
"Forces always occur in pairs. Force on a body 'A' by 'B' is equal and opposite to the force on the body 'B' by 'A'." This statement represents ________. |
| A. | Newton's 1st Law |
| B. | Newton's 3rd Law |
| C. | Newton's 2nd Law |
| D. | Law of conservation of energy |
| Answer» C. Newton's 2nd Law | |
| 63. |
An object of mass 3 kg is at rest. Now a 6 N force is applied on the object for 3 seconds. Find the velocity of the object acquired by it in m / s. |
| A. | 12 |
| B. | 6 |
| C. | 9 |
| D. | 8 |
| Answer» C. 9 | |
| 64. |
How do you measure the inertia of an object? |
| A. | By its magnitude |
| B. | By its displacement |
| C. | By its height |
| D. | By its mass |
| Answer» E. | |
| 65. |
A crane lifts a mass of 200 kg from rest and it attains an upward velocity of 3 m/s in 2 s uniformly. The tension in the supporting cable is |
| A. | 200 N |
| B. | 2000 N |
| C. | 300 N |
| D. | 2300 N |
| Answer» E. | |
| 66. |
Newton’s first law of motion is not valid for______ |
| A. | Inertial frame |
| B. | Non-inertial frame |
| C. | Both Inertial and non-Inertial frame |
| D. | None of the above |
| Answer» C. Both Inertial and non-Inertial frame | |
| 67. |
Mass of a particular amount of substance1. is the amount of matter present in it.2. does not vary from place to place.3. Changes with the change in gravitational force.Select the correct answer using the code given below: |
| A. | 1, 2 and 3 |
| B. | 1 and 2 only |
| C. | 2 and 3 only |
| D. | 1 only |
| Answer» C. 2 and 3 only | |
| 68. |
A body has a free fall from a height of 20 m. After falling through a distance of 5 m, the body would |
| A. | Lose one-fourth of its total energy |
| B. | Lose one-fourth of its potential energy |
| C. | Gain one-fourth of its potential energy |
| D. | Gain three-fourth of its total energy |
| Answer» C. Gain one-fourth of its potential energy | |
| 69. |
A rope of length 10 m and linear density of 0.5 kg/m is lying lengthwise on a smooth horizontal floor. It is pulled by a force of 25 N. The tension in the rope at a point 6 m away from the point of application is: |
| A. | 10 N |
| B. | 20 N |
| C. | 15 N |
| D. | 5 N |
| Answer» B. 20 N | |
| 70. |
A 20.0 kg block is placed on a smooth horizontal table. A horizontal force of 12.0 Newton is applied to the block. The position of the block at 5.0 sec is |
| A. | 5.2 meter |
| B. | 7.5 meter |
| C. | 20.8 meter |
| D. | 12.6 meter |
| Answer» C. 20.8 meter | |
| 71. |
An automobile that is towing a trailer is accelerating on a level road. The force that the automobile exerts on the trailer is |
| A. | equal to the force the trailer exerts on the automobile |
| B. | greater than the force the trailer exerts on the automobile |
| C. | equal to the force the trailer exerts on the road |
| D. | equal to the force the road exerts on the trailer |
| Answer» B. greater than the force the trailer exerts on the automobile | |
| 72. |
_________________ law of motion may be phrased as: An external force is required to keep a body in uniform motion. |
| A. | Galileo 's |
| B. | Khayyam's |
| C. | Aristotle's |
| D. | Newton's |
| Answer» D. Newton's | |
| 73. |
A ball is released from rest and rolls down an inclined plane, as shown in the following figure, requiring 4 s to cover a distance of 100 cm along the plane:Which one of the following is the correct value of angle θ that the plane makes with the horizontal? (g = 1000 cm/s2) |
| A. | θ = sin-1 (1/9.8) |
| B. | θ = sin-1 (1/20) |
| C. | θ = sin-1 (1/80) |
| D. | θ = sin-1 (1/100) |
| Answer» D. θ = sin-1 (1/100) | |
| 74. |
Newton’s second law of motion _______ |
| A. | It is also called a law of conservation of energy |
| B. | Is also called as law of inertia |
| C. | Describes the relationship between the forces on two interacting objects |
| D. | Explains about change in momentum |
| Answer» E. | |
| 75. |
Motion of a body as a whole from one point to another is called? |
| A. | translation |
| B. | vibration |
| C. | oscillation |
| D. | Brownian motion |
| Answer» B. vibration | |
| 76. |
Force / Acceleration = |
| A. | Momentum |
| B. | Speed |
| C. | Mass |
| D. | Pressure |
| Answer» D. Pressure | |
| 77. |
A motor car moves with same speed on (i) a horizontal bridge (ii) a concave bridge (iii) a convex bridge. The force exerted by the car on the bridge is maximum when it reaches the centre of the bridge in case of |
| A. | a horizontal bridge |
| B. | a convex bridge |
| C. | a Concave bridge |
| D. | same in all cases |
| Answer» C. a Concave bridge | |
| 78. |
A rigid body of mass 2 kg is dropped from a stationary balloon kept at a height of 50 m from the ground. The speed of the body when it just touches the ground and the total energywhen it is dropped from the balloon are respectively(acceleration due to gravity = 9·8 m/s-2) |
| A. | 980 m.s-1 and 980 J |
| B. | \(\sqrt {980} \;m.{s^{ - 1}}\;and\;\sqrt {980} \;J\) |
| C. | 980 m.s-1 and √980 J |
| D. | √980 m.s-1 and 980 J |
| Answer» E. | |
| 79. |
Consider the following velocity and time graph:Which one of the following is the value of average acceleration from 8 s to 12 s? |
| A. | 8 m/s2 |
| B. | 12 m/s2 |
| C. | 2 m/s2 |
| D. | -1 m/s2 |
| Answer» E. | |
| 80. |
A ball balanced on a vertical rod is an example of |
| A. | Stable equilibrium |
| B. | Unstable equilibrium |
| C. | Neutral equilibrium |
| D. | Perfect equilibrium |
| Answer» C. Neutral equilibrium | |
| 81. |
Grooves are made in the tyres of vehicles to: |
| A. | Increase the friction |
| B. | Remove the friction |
| C. | Equalize friction |
| D. | Reduce the friction |
| Answer» B. Remove the friction | |
| 82. |
Force = |
| A. | mass × density |
| B. | mass × volume |
| C. | mass × velocity |
| D. | mass × acceleration |
| Answer» E. | |
| 83. |
Let there be an object having some chemicals in it. It starts moving with a uniform velocity v and a chemical reaction starts happening. In this case, which of the following statement/s is/are correct?1) Chemical reactions happening. in the system cannot change the velocity v of the centre of mass of the object.2) Chemical reactions happening in the system cannot change kinetic energy of the particles inside with respect to the center of mass of object.Select the correct answer using the code given below: |
| A. | 1 only |
| B. | 2 only |
| C. | Both 1 and 2 |
| D. | Neither 1 nor 2 |
| Answer» D. Neither 1 nor 2 | |
| 84. |
A figure of a bus in motion with four passengers sitting in it is given below:Passengers A and B are sitting face to face and similarly passengers C and D are sitting face to face. If sudden brake is applied to the bus in motion, what science based event will occur from the following? |
| A. | Passenger A will lean to his left and D will lean forward |
| B. | Passenger C will lean forward and B will lean to his left |
| C. | Passenger a will lean to his right and B will lean to his right |
| D. | Passenger C will lean backward and D will lean backward |
| Answer» B. Passenger C will lean forward and B will lean to his left | |
| 85. |
A string of certain length used to whirl a stone in a vertical circle with certain velocity. The tension developed in the string will be |
| A. | same along the circle |
| B. | highest at the top of the circle |
| C. | least at the top of the circle |
| D. | highest at the bottom of the circle |
| Answer» E. | |
| 86. |
A racing car accelerates on a straight road from rest to speed of 50 m/s in 25 s. Assuming uniform acceleration of the car throughout, the distance covered in this time will be |
| A. | 625 m |
| B. | 1250 m |
| C. | 2500 m |
| D. | 50 m |
| Answer» B. 1250 m | |
| 87. |
A motorbike starts from rest and accelerates at a rate of 4 m/s2 for 10 seconds and then decelerates at 8 m/s2 until it stops. The total distance travelled is |
| A. | 100 m |
| B. | 200 m |
| C. | 300 m |
| D. | 500 m |
| Answer» D. 500 m | |
| 88. |
A body of mass 4 kg accelerates from 15 m/s to 25 m/s in 5 seconds due to the application of a force on it. Calculate the magnitude of this force (in N). |
| A. | 32 |
| B. | 8 |
| C. | 16 |
| D. | 64 |
| Answer» C. 16 | |
| 89. |
Newton's law of motions were stated by scientist named as |
| A. | Isaac Newton |
| B. | John Newton |
| C. | newton ken |
| D. | Eric Newton |
| Answer» B. John Newton | |
| 90. |
No body begins to move or comes to rest itself", this statement is given by |
| A. | Isaac Newton |
| B. | Abu Ali Sena |
| C. | Al Kunai |
| D. | Stephen Hawking |
| Answer» C. Al Kunai | |
| 91. |
"Every action has an equal and opposite reaction" is Newton's |
| A. | first law |
| B. | second law |
| C. | third law |
| D. | fourth law |
| Answer» D. fourth law | |
| 92. |
Mass of object is quantitative measure of its inertia stated law is newton's |
| A. | first law |
| B. | second law |
| C. | third law |
| D. | fourth law |
| Answer» B. second law | |
| 93. |
Newton's laws of motion were published in year |
| A. | 1687 |
| B. | 1787 |
| C. | 1887 |
| D. | 1987 |
| Answer» B. 1787 | |