MCQOPTIONS
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MCQOPTIONS
This section includes 2016 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Echoes are heard due to the phenomenon of ________. |
| A. | Reflection of sound waves |
| B. | Resonance |
| C. | Interference of sound waves |
| D. | Refraction of sound waves |
| Answer» B. Resonance | |
| 452. |
Consider the following two statements and select the most appropriate option -A. The linear momentum of a particle's system is zero.B. The kinetic energy of a particle's system is zero. |
| A. | A does not mean B, but B means A. |
| B. | A does not mean B but B does not mean A. |
| C. | A means B but A means B. |
| D. | A means B but A does not mean B. |
| Answer» B. A does not mean B but B does not mean A. | |
| 453. |
Hydraulic press is based on |
| A. | Archimedes' law |
| B. | Pascal's law |
| C. | Reynold's law |
| D. | Bernouli's law |
| Answer» C. Reynold's law | |
| 454. |
Fill in the blank with the most appropriate option.The pitch of a sound depends on its_____. |
| A. | Frequency |
| B. | Wavelength |
| C. | Amplitude |
| D. | Timbre |
| Answer» B. Wavelength | |
| 455. |
A device G.M counter is used for the measurement of which of the following? |
| A. | Speed of air |
| B. | Mass number |
| C. | Radioactivity |
| D. | Valence |
| Answer» D. Valence | |
| 456. |
In which medium does sound travel at maximum speed? |
| A. | Liquids |
| B. | Solids |
| C. | Same speed in gases and liquids |
| D. | Gases |
| Answer» C. Same speed in gases and liquids | |
| 457. |
A mass of 20 kg is at a height of 8 m above the ground. Then the potential energy possessed by the body is:[Given g = 9.8 ms-2] |
| A. | 1568 J |
| B. | 1568 C |
| C. | 1568 W |
| D. | 1568 N |
| Answer» B. 1568 C | |
| 458. |
Ice crystals falling from sky during rain are called ________ rain . |
| A. | Fog |
| B. | Ice |
| C. | Rain |
| D. | Relative Humidity |
| Answer» C. Rain | |
| 459. |
An object is said to be in what kind of motion if it is moving along a straight line with a constant speed? |
| A. | Non - uniform motion |
| B. | Uniform motion |
| C. | Both uniform and non - uniform motion |
| D. | Neither uniform nor non - uniform notion |
| Answer» C. Both uniform and non - uniform motion | |
| 460. |
1 kWH = _______ J |
| A. | 3.6 × 10-8 |
| B. | 3.6 × 10-6 |
| C. | 3.6 × 108 |
| D. | 3.6 × 106 |
| Answer» E. | |
| 461. |
Beta particles from various radioactive sources have _____? |
| A. | Same Deflection |
| B. | Same speed |
| C. | Same Charge |
| D. | Same Mass |
| Answer» B. Same speed | |
| 462. |
An object of mass 15 kg is moving with a uniform velocity of 2 ms-1. What is the kinetic energy possessed by the object? |
| A. | 187.5 J |
| B. | 30 J |
| C. | 17.5 J |
| D. | 187.5 ms |
| Answer» C. 17.5 J | |
| 463. |
A current of 0.5 A is maintained in a resistor of 10 Ω. The amount of charge flowing throwing the resistor in one minute is: |
| A. | 30 C |
| B. | 5 C |
| C. | 0.5 C |
| D. | 20 C |
| Answer» B. 5 C | |
| 464. |
A body is initially moving with a velocity of 10 m/s. It undergoes an acceleration of 2 m/s2 for 5 seconds. Find the displacement (in m) of this body in these 5 seconds. |
| A. | 25 |
| B. | 37.5 |
| C. | 50 |
| D. | 75 |
| Answer» E. | |
| 465. |
How low is the gravity on the Moon compared to Earth? |
| A. | Eight times |
| B. | Four times |
| C. | Six times |
| D. | Ten Times |
| Answer» D. Ten Times | |
| 466. |
If a bulb uses energy of 100 J and remains on for 20 seconds, then the power consumed by the bulb is ________. |
| A. | 20 W |
| B. | 0.2 W |
| C. | 1 W |
| D. | 5 W |
| Answer» E. | |
| 467. |
Energy in the foods can be measured in which units? |
| A. | Kelvin |
| B. | Joule |
| C. | Calorie |
| D. | Celsius |
| Answer» D. Celsius | |
| 468. |
Momentum = ________ |
| A. | mass × Acceleration |
| B. | Mass / Volume |
| C. | Mass × Velocity |
| D. | Mass × Density |
| Answer» D. Mass × Density | |
| 469. |
Match the following:QuantitySI Unit1. Frequencya. Ohm2. Forceb. Hertz3. Resistancec. Newton |
| A. | 1 – b, 2 – c, 3 – a |
| B. | 1 – a, 2 – c, 3 – b |
| C. | 1 – c, 2 – b, 3 – a |
| D. | 1 – b, 2 – a, 3 – c |
| Answer» B. 1 – a, 2 – c, 3 – b | |
| 470. |
Gravitational force is maximum at which of the following place ? |
| A. | At equator |
| B. | At tropic of cancer |
| C. | At tropic of capricorn |
| D. | At poles |
| Answer» E. | |
| 471. |
According to law of refraction what is said about the incident ray, refracted ray and the normal to the interface of two transparent media at the point of incidence? |
| A. | All have the same length |
| B. | All lie in the same plane |
| C. | All are refracted |
| D. | All have the same angle |
| Answer» C. All are refracted | |
| 472. |
Divers wear special suits in order to protect them from: |
| A. | Low pressure |
| B. | Low temperature |
| C. | High temperature |
| D. | High pressure |
| Answer» E. | |
| 473. |
A 100 W electric bulb is used for 10 hours a day. How many units of energy are consumed in 30 days? |
| A. | 1 |
| B. | 10 |
| C. | 30 |
| D. | 300 |
| Answer» D. 300 | |
| 474. |
A tennis ball is thrown vertically upward with a speed of 50 m/s. The magnitude of its displacement after 6 s will be _______.(g = 10 m/s2) |
| A. | 150 m |
| B. | 140 m |
| C. | 120 m |
| D. | 215 m |
| Answer» D. 215 m | |
| 475. |
A concave lens has a focal length 15 cm. If the object is placed at 30 cm from the lens, what is the image distance? |
| A. | -20 cm |
| B. | -10 cm |
| C. | -15 cm |
| D. | -18 cm |
| Answer» C. -15 cm | |
| 476. |
A force acts on an object which is free to move. If we know the magnitude of the force and the mass of the object then Newton’s second law of motion enables us to determine the object’s ________. |
| A. | Velocity |
| B. | Speed |
| C. | Acceleration |
| D. | Distance |
| Answer» D. Distance | |
| 477. |
If the power of a corrective lens in +2.0D, then it is a: |
| A. | Convex lens |
| B. | Concave lens |
| C. | Convex mirror |
| D. | Concave mirror |
| Answer» B. Concave lens | |
| 478. |
A horizontal force of 10 N displaces a 5 kg object through a distance of 2 m in the direction of force. The work done by the force will be________. |
| A. | 20 J |
| B. | 10 J |
| C. | 5 J |
| D. | 50 J |
| Answer» B. 10 J | |
| 479. |
120Sn50 and 118Sn50 are examples of? |
| A. | Isobars |
| B. | Isomers |
| C. | Isotones |
| D. | Isotopes |
| Answer» E. | |
| 480. |
A convex mirror of focal length f (in air) is immersed in a liquid . The focal length of the mirror in liquid \(\left( {\mu - \frac{4}{3}} \right)\) will be: |
| A. | (4/3) f |
| B. | (3/4) f |
| C. | (7/3) f |
| D. | F |
| Answer» E. | |
| 481. |
On a rainy day, small oily films on water show brilliant colours. This is due to |
| A. | Interference |
| B. | Dispersion |
| C. | Refraction |
| D. | Polarisation |
| Answer» B. Dispersion | |
| 482. |
“Nano plug” refers to: |
| A. | A small bullet |
| B. | A small hearing aid |
| C. | A small rocket launcher |
| D. | None of the above |
| Answer» C. A small rocket launcher | |
| 483. |
If a physical quantity has the units - ampere meters per second squared, then what are it's dimensions? |
| A. | [I LT-2] |
| B. | [ALT-2] |
| C. | [I MS-2] |
| D. | [AMS-2] |
| Answer» C. [I MS-2] | |
| 484. |
An object is placed at 10 cm in front of a concave mirror of radius of curvature 12 cm. How far is the image formed from the mirror? |
| A. | 10 cm |
| B. | 20 cm |
| C. | 15 cm |
| D. | 25 cm |
| Answer» D. 25 cm | |
| 485. |
'Dynamo' is a device, which converts |
| A. | chemical energy into electrical energy |
| B. | electrical energy into mechanical energy |
| C. | mechanical energy into electrical energy |
| D. | electrical energy into chemical energy |
| Answer» D. electrical energy into chemical energy | |
| 486. |
Fathom is a unit of |
| A. | Sound |
| B. | Depth |
| C. | Frequency |
| D. | Distance |
| Answer» C. Frequency | |
| 487. |
A Sonar of a ship sends sounds waves of speed 1600m/s. These waves are reflected back by the ocean floor in 4 seconds. Find the depth (in m) of the ocean floor. |
| A. | 6400 |
| B. | 3200 |
| C. | 1600 |
| D. | 4800 |
| Answer» C. 1600 | |
| 488. |
An object is placed at the centre of curvature of a concave mirror. Its image is formed at: |
| A. | The focus |
| B. | A point beyond centre of curvature |
| C. | The centre of curvature |
| D. | A point between focus and centre of curvature |
| Answer» D. A point between focus and centre of curvature | |
| 489. |
If you touch your left ear by right hand in front of a plane mirror, it will se seen in the mirror that your: |
| A. | right ear is touched by right hand |
| B. | left ear is touched by left hand |
| C. | left ear is touched by right hand |
| D. | right ear is touched by left hand |
| Answer» E. | |
| 490. |
A fuse is a: |
| A. | Safety device and regulates flow of current |
| B. | It is made up of tin and lead alloy |
| C. | Has low melting point |
| D. | All of the above |
| Answer» E. | |
| 491. |
An athlete in the Olympic Games covers a distance of 100 m in 10s. His kinetic energy can be estimated to be in the range of: |
| A. | 200 J – 500 J |
| B. | 200000 J – 500000 J |
| C. | 20000 J – 50000 J |
| D. | 2000 J – 5000 J |
| Answer» E. | |
| 492. |
In a periscope, the two plane mirrors are kept |
| A. | parallel to each other |
| B. | perpendicular to each other |
| C. | at an angle of 60° with each other |
| D. | at an angle of 45° with each other |
| Answer» B. perpendicular to each other | |
| 493. |
Consider the following statements:A. A water drop in a vacuum is perfectly spherical.B. The shape of a water drop is due to the action of gravity.C. Soaps and detergents drastically decrease the surface tension of water.D. As temperature increases, surface tension also increases and becomes maximum at critical temperature.Which of the above statements are correct? Select the code for the correct answer from the options given below: |
| A. | A, B, C and D |
| B. | B, C and D only |
| C. | A, B and C only |
| D. | A and C only |
| Answer» E. | |
| 494. |
An electric iron of 1250 W is used for 3 h per day. The energy consumed in one day by the electric iron is _______ units. |
| A. | .375 |
| B. | 37.5 |
| C. | 3.75 |
| D. | 375 |
| Answer» D. 375 | |
| 495. |
A ________ splits sunlight into seven colours. |
| A. | concave lens |
| B. | convex lens |
| C. | Prism |
| D. | concave mirror |
| Answer» D. concave mirror | |
| 496. |
A sound wave travels at a speed of 340 ms-1. If its wavelength is 2 cm, what is the frequency of the wave? |
| A. | 170 Hz |
| B. | 17000 Hz |
| C. | 1700 Hz |
| D. | 170000 Hz |
| Answer» C. 1700 Hz | |
| 497. |
If a current of 0.3 A is passed through a coil of resistance 418 ohms for 1 min, find the heat energy generated. |
| A. | 360 cal |
| B. | 540 cal |
| C. | 54 cal |
| D. | 36 cal |
| Answer» C. 54 cal | |
| 498. |
Atom bomb is based on the principle of |
| A. | nuclear fission |
| B. | nuclear fusion |
| C. | atomic energy imbalance |
| D. | atomic mass conservation |
| Answer» B. nuclear fusion | |
| 499. |
Dioptre is the SI Unit of which of the following? |
| A. | Wavelength |
| B. | Flame intensity |
| C. | Power of lens |
| D. | Magnetic power |
| Answer» D. Magnetic power | |
| 500. |
A/an ______ is used to measure the force and velocity of wind. |
| A. | speedometer |
| B. | lactometer |
| C. | thermometer |
| D. | anemometer |
| Answer» E. | |