MCQOPTIONS
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MCQOPTIONS
This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The slope of a velocity-time graph represents |
| A. | cceleration |
| B. | isplacement |
| C. | istance |
| D. | peed |
| Answer» B. isplacement | |
| 2. |
In ________ motion of a body its velocity varies with time. |
| A. | niform |
| B. | inear |
| C. | quilibrium |
| D. | on-uniform |
| Answer» E. | |
| 3. |
For a body moving with uniform acceleration its final velocity equals ________ |
| A. | verage velocity - initial velocity |
| B. | x average velocity - initial velocity |
| C. | x average velocity + initial velocity |
| D. | verage velocity + initial velocity |
| Answer» C. x average velocity + initial velocity | |
| 4. |
As we go from Equator to North pole the value of ''g', the acceleration due to gravity |
| A. | emains the same |
| B. | ecreases |
| C. | ncreases |
| D. | one of the above |
| Answer» D. one of the above | |
| 5. |
A man standing on a edge of a cliff throws a stone vertically upwards with a certain speed. He then throws another stone downwards with the same speed. Find the ratio of the speeds of the two stones when they hit the ground. |
| A. | : 1 |
| B. | : 2 |
| C. | : 4 |
| D. | annot be found from the given information. |
| Answer» B. : 2 | |
| 6. |
For a body moving with non-uniform velocity and uniform acceleration |
| A. | isplacement – Time graph is linear |
| B. | isplacement – Time graph is non-linear |
| C. | elocity – Time graph is nonlinear |
| D. | elocity – Time graph is linear |
| Answer» C. elocity – Time graph is nonlinear | |
| 7. |
Rate of change of displacement is known as ________ |
| A. | cceleration |
| B. | elocity |
| C. | peed |
| D. | istance |
| Answer» C. peed | |
| 8. |
The motion of the wheels of a bullock-cart while moving on the road is an example of |
| A. | scillatory and rotatory motion |
| B. | scillatory and translatory motion |
| C. | ranslatory and rotatory motion |
| D. | ranslatory motion only |
| Answer» D. ranslatory motion only | |
| 9. |
The motion of a freely falling body is an example of ________ accelerated motion. |
| A. | on-uniformly |
| B. | niformly |
| C. | niquely |
| D. | pecially |
| Answer» C. niquely | |
| 10. |
Newton's first law of motion gives the concept of |
| A. | nergy |
| B. | ork |
| C. | omentum |
| D. | nertia |
| Answer» E. | |
| 11. |
The word ''insolation' means |
| A. | atters which insulate |
| B. | ncoming solar radiation |
| C. | nsoluble matters |
| D. | one of the above |
| Answer» C. nsoluble matters | |
| 12. |
When temperature difference between liquid and its surroundings is doubled, the rate of loss of heat will: |
| A. | emain same |
| B. | ouble |
| C. | hree times |
| D. | our times |
| Answer» C. hree times | |
| 13. |
The earth is a |
| A. | ood reflector of heat |
| B. | on-absorber of heat |
| C. | ood absorber and good radiator of heat |
| D. | ad absorber and bad radiator of heat |
| Answer» D. ad absorber and bad radiator of heat | |
| 14. |
When a ring of metal is heated what happens to its hole ? |
| A. | xpands |
| B. | ontracts |
| C. | t expands or contracts according to its diameter |
| D. | t expands or contracts according to its coefficient of expansion |
| Answer» B. ontracts | |
| 15. |
The cover of a solar cooker is made of glass because |
| A. | t absorbs sun's rays |
| B. | t reflects sun's rays |
| C. | t retains the heat inside by the green house effect |
| D. | t rediates heat better than metals |
| Answer» D. t rediates heat better than metals | |
| 16. |
A black body can absorb radiations of : |
| A. | ower wavelengths only |
| B. | ntermediate wavelengths only |
| C. | igher wavelengths only |
| D. | ll wavelengths |
| Answer» E. | |
| 17. |
A body absorbs heat most if it is |
| A. | lack and rough |
| B. | lack and smooth |
| C. | hite and rough |
| D. | hite and smooth |
| Answer» B. lack and smooth | |
| 18. |
Heat from the Sun reaches the Earth by |
| A. | eflection |
| B. | onduction |
| C. | adiation |
| D. | onvection |
| Answer» D. onvection | |
| 19. |
Sun's heat reaches us by |
| A. | onduction |
| B. | onvection |
| C. | adiation |
| D. | eflection |
| Answer» D. eflection | |
| 20. |
Why two thin shirts can keep us warmer than a single thick shirt in winter ? |
| A. | wo thin shirts become thicker so prevent transmission of heat |
| B. | ir layer between two shirts works as good conductor |
| C. | ir layer between two shirts behaves like insulating media |
| D. | o radiation of heat takes place |
| Answer» D. o radiation of heat takes place | |
| 21. |
In general, which is the cause of a land breeze? |
| A. | ressure |
| B. | eat |
| C. | emperature |
| D. | one of the above |
| Answer» D. one of the above | |
| 22. |
Plants are dried up in winter due to frost because |
| A. | vaporation does not take place |
| B. | hotosynthesis does not take place at such low temperature |
| C. | espiration does not take place at low temperature |
| D. | here is mechanical loss of tissues and drought condition prevails |
| Answer» E. | |
| 23. |
Wollen clothes keep the body warm because |
| A. | ool increases the temperature of the body |
| B. | ool is a bad conductor |
| C. | ool absorbs radiant heat from outer objects |
| D. | ool rejects heat from the outer objects |
| Answer» C. ool absorbs radiant heat from outer objects | |
| 24. |
Ventilators are provided near the ceiling of the room because |
| A. | he exhaled warmer air rises up and goes out |
| B. | hese provide cross ventilation in the room |
| C. | hese provide some sunlight in the room |
| D. | hese do not look nice in the lower part |
| Answer» C. hese provide some sunlight in the room | |
| 25. |
Ocean currents are an example of |
| A. | onvection |
| B. | onduction |
| C. | nsulation |
| D. | adiation |
| Answer» B. onduction | |
| 26. |
Heat from the sun reaches earth by the process of |
| A. | onduction |
| B. | onvection |
| C. | adiation |
| D. | ll of the above |
| Answer» D. ll of the above | |
| 27. |
Which of the following criterion is used for any metal to be used as a cooking material ? |
| A. | ore specific heat |
| B. | ore thermal conductivity |
| C. | ess thermal conductivity |
| D. | ess electrical conductivity |
| Answer» D. ess electrical conductivity | |
| 28. |
Which of the following are methods of heat transfer? |
| A. | onvection |
| B. | vaporation |
| C. | evolution |
| D. | hermal Expansion |
| Answer» B. vaporation | |
| 29. |
Woollen cloth protects the body from cold because |
| A. | t is a good conductor of heat |
| B. | t is a poor conductor of heat |
| C. | xternal heat rays enter into the body through the woollen cloth |
| D. | t reflects heat |
| Answer» C. xternal heat rays enter into the body through the woollen cloth | |
| 30. |
A white and smooth surface is |
| A. | ood absorber and good reflector of heat |
| B. | ad absorber and good reflector of heat |
| C. | ood absorber and bad reflector of heat |
| D. | ad absorber and bad reflector of heat |
| Answer» C. ood absorber and bad reflector of heat | |
| 31. |
Outside of cooking utensils are generally left black from below because |
| A. | t is difficult to clean daily. |
| B. | lack surface is a good conductor of heat. |
| C. | lack surface is a poor conductor of heat. |
| D. | lack surface is a good absorber of heat. |
| Answer» E. | |
| 32. |
Ice is packed in saw dust because |
| A. | aw dust will not get melted easily. |
| B. | aw dust is poor conductor of heat. |
| C. | aw dust is a good conductor of heat. |
| D. | aw dust does not stick to the ice. |
| Answer» C. aw dust is a good conductor of heat. | |
| 33. |
Why does ice covered in sawdust not melt quickly ? |
| A. | awdust does not allow the air to touch the ice |
| B. | he water is absorbed by sawdust |
| C. | awdust is a bad conductor of heat |
| D. | awdust is good conductor of heat |
| Answer» D. awdust is good conductor of heat | |
| 34. |
A person is hurt on kicking a stone due to |
| A. | nertia |
| B. | elocity |
| C. | eaction |
| D. | omentum |
| Answer» D. omentum | |
| 35. |
In the Earth, the weight of a body is maximum at the |
| A. | orth Pole |
| B. | outh Pole |
| C. | quator |
| D. | urface |
| Answer» E. | |
| 36. |
It is difficult to fix a nail on a freely suspended wooden frame. Which law supports this statement? |
| A. | aw of inertia |
| B. | ewton's second law |
| C. | ewton's third law |
| D. | ascal's law |
| Answer» D. ascal's law | |
| 37. |
Who defined the law of gravitation ? |
| A. | ewton |
| B. | rchimedes |
| C. | alileo |
| D. | araday |
| Answer» B. rchimedes | |
| 38. |
When a running car stops suddenly, the passengers tends to lean forward because of: |
| A. | entrifugal force |
| B. | nertia of rest |
| C. | nertia of motion |
| D. | ravitational force |
| Answer» D. ravitational force | |
| 39. |
A passenger standing in a bus is thrown outward when the bus takes a sudden turn. This happens due to |
| A. | utward pull on him |
| B. | nertia of motion |
| C. | hange in momentum |
| D. | hange in acceleration |
| Answer» C. hange in momentum | |
| 40. |
Rocket works on the principle of |
| A. | ewton's Third Law |
| B. | ewton's First Law |
| C. | ewton's Second Law |
| D. | rchimedes Principle |
| Answer» B. ewton's First Law | |
| 41. |
Which conservation principle is applicable in the case of the motion of a rocket? |
| A. | onservation of mass |
| B. | onservation of charge |
| C. | onservation of momentum |
| D. | onservation of energy |
| Answer» D. onservation of energy | |
| 42. |
According to the Second Law of Motion, for a given force, acceleration is inversely proportional to the ________ of an object. |
| A. | ensity |
| B. | olume |
| C. | orce |
| D. | ass |
| Answer» E. | |
| 43. |
When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler. |
| A. | aw of conservation of energy |
| B. | ewton's third law of motion |
| C. | aw of Inertia |
| D. | aw of conservation of momentum |
| Answer» D. aw of conservation of momentum | |
| 44. |
The cooling by a desert Cooler is based on: |
| A. | ot air replacement |
| B. | ir dehydration |
| C. | vaporative Cooling |
| D. | ir Rehydration |
| Answer» D. ir Rehydration | |
| 45. |
An athlete runs before long jump to get advantage on |
| A. | nertia of motion |
| B. | rictional force |
| C. | oment of a force |
| D. | rinciple of moments |
| Answer» B. rictional force | |
| 46. |
The moment of inertia of a body does not depend upon its |
| A. | xis of rotation |
| B. | ngular velocity |
| C. | orm of mass |
| D. | istribution of mass |
| Answer» C. orm of mass | |
| 47. |
When a vibrating tuning fork is placed on a table, a loud sound is heard. This is due to : |
| A. | eflection |
| B. | efraction |
| C. | orced vibrations |
| D. | amped vibrations |
| Answer» D. amped vibrations | |
| 48. |
The velocity of sound in air |
| A. | ecreases with increase of temperature |
| B. | ncreases with decrease of temperature |
| C. | oes not depend on temperature |
| D. | ecreases with decrease of temperature |
| Answer» E. | |
| 49. |
The intensity ratio of waves is 25 : 9. What is the ratio of their amplitudes? |
| A. | 0 : 18 |
| B. | 5 : 9 |
| C. | : 5 |
| D. | : 3 |
| Answer» E. | |
| 50. |
The density of the liquid when heated |
| A. | ecreases |
| B. | ncreases |
| C. | oes not change |
| D. | ay increase of decrease depending on pressure |
| Answer» B. ncreases | |