MCQOPTIONS
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MCQOPTIONS
This section includes 38 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If a wheel of radius r turns through an angle of 30? then the distance through which any point on its rim moves is |
| A. | ? /3 x r |
| B. | ?/6 x r |
| C. | ?/30 x r |
| D. | ? / 180 x r |
| Answer» C. ?/30 x r | |
| 2. |
If we whirl a stone at the end of a string in the vertical circle, it is likely to break when the stone is |
| A. | At the highest point |
| B. | At the lowest point |
| C. | At any point during motion |
| D. | At the point where gravity is not acting |
| Answer» C. At any point during motion | |
| 3. |
In angular motion, Newtons second law of motion is |
| A. | F=ma |
| B. | F=?p/?t |
| C. | ? = 1a |
| D. | All above |
| Answer» D. All above | |
| 4. |
In case of planets the necessary acceleration is provided by |
| A. | Gravitational force |
| B. | Frictional force |
| C. | Coulomb force |
| D. | Centripetal force |
| Answer» B. Frictional force | |
| 5. |
Minimum number of communication satellites required to cover the whole carth is |
| A. | 4 |
| B. | 3 |
| C. | 2 |
| D. | 5 |
| Answer» C. 2 | |
| 6. |
moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R, the ratio of displacement to the covered path will be |
| A. | ??R |
| B. | 2??R |
| C. | Zero |
| D. | 4??R |
| Answer» D. 4??R | |
| 7. |
One radian is equal to |
| A. | 67.3? |
| B. | 57.3? |
| C. | 87.3? |
| D. | 60? |
| Answer» C. 87.3? | |
| 8. |
Radius of geo-stationary orbit from center of earth is nearly |
| A. | 42000km |
| B. | 36000km |
| C. | 24000 km |
| D. | 18000 km |
| Answer» B. 36000km | |
| 9. |
The angular speed for daily rotatio of earth in rad S-1 is |
| A. | 2 ? |
| B. | ? |
| C. | 4 ? |
| D. | 7.3 x 10-5 rads-1 |
| Answer» E. | |
| 10. |
The circumference subtends an angle |
| A. | ? radianradian |
| B. | 2? radian |
| C. | ?/2 radian |
| D. | 4? radian |
| Answer» C. ?/2 radian | |
| 11. |
The critical speed of an artificial satellite is |
| A. | 8 Kms-1 |
| B. | 8.1 Kms-1 |
| C. | 7.9 Kms-1 |
| D. | 8 ms-1 |
| Answer» D. 8 ms-1 | |
| 12. |
The direction of linear velocity of body moving in a circle is |
| A. | Along the axis of rotation |
| B. | Along the tangent |
| C. | Directed towards the center |
| D. | Directed away form the center |
| Answer» C. Directed towards the center | |
| 13. |
The period of a circular motion is given by |
| A. | T = rV |
| B. | T = ?w |
| C. | T = 2?? |
| D. | T = 2?/? |
| Answer» E. | |
| 14. |
The planet nearest to the earth is |
| A. | Venus |
| B. | Mercury |
| C. | Uranus |
| D. | Sun |
| Answer» B. Mercury | |
| 15. |
The relation between linear and angular acceleration is |
| A. | A = a x r |
| B. | A = r x a |
| C. | A = a x r |
| D. | R = a x a |
| Answer» D. R = a x a | |
| 16. |
A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be |
| A. | ? R |
| B. | 2? R |
| C. | Zero |
| D. | 4? R |
| Answer» D. 4? R | |
| 17. |
A cyclist cycling around a circular racing track skids because |
| A. | The centripetal force upon him is less than limiting friction |
| B. | The centripetal force upon him is greater then limiting friction |
| C. | The centripetal force upon him is equal to the limiting friction |
| D. | The friction between the tyres of the cycle and road vanishes |
| Answer» C. The centripetal force upon him is equal to the limiting friction | |
| 18. |
A hoop and disc have same mass and radius. Their rotational K.E are related by an equation |
| A. | K.Ehoop = K.Edisc |
| B. | K.Ehoop = 2K.Edisc |
| C. | K.Ehoop = 1/2K.Edisc |
| D. | K.Ehoop = 4K.Edisc |
| Answer» C. K.Ehoop = 1/2K.Edisc | |
| 19. |
A man of weight W is standing on an elevator which is ascending with an acceleration a. The apparent weight of the man is |
| A. | Mg |
| B. | Mg - ma |
| C. | Mg + ma |
| D. | Mg - ma |
| Answer» D. Mg - ma | |
| 20. |
A satellite moving round the earth constitutes |
| A. | An inertial frome of reference |
| B. | Non inertial frame |
| C. | Neither inertial nor non inertial |
| D. | Both inertial and non inertial |
| Answer» C. Neither inertial nor non inertial | |
| 21. |
A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is |
| A. | Maximum |
| B. | Zero |
| C. | Equal to the weight of the stone |
| D. | Less than the weight of the stone |
| Answer» D. Less than the weight of the stone | |
| 22. |
If a body of mass 10 kg is allowed to fall freely, its weight becomes |
| A. | Zero |
| B. | 89N |
| C. | 9.8 N |
| D. | 10N |
| Answer» B. 89N | |
| 23. |
According to Einstein the gravity interaction is possible between |
| A. | Material objects only |
| B. | Material objects and electromagnetic radiation only |
| C. | Electromagnetic radiations |
| D. | None of the above |
| Answer» C. Electromagnetic radiations | |
| 24. |
Angular speed of seconds hand of a watch in rads-1 is |
| A. | ? |
| B. | ?/2 |
| C. | ?/30 |
| D. | ?/180 |
| Answer» D. ?/180 | |
| 25. |
Centripetal force performs |
| A. | Maximum work |
| B. | Minimum work |
| C. | Negative work |
| D. | No work |
| Answer» E. | |
| 26. |
Geo-stationary satellite completes one rotation around earth in |
| A. | 3 hours |
| B. | 6 hours |
| C. | 12 hours |
| D. | 24 hours |
| Answer» E. | |
| 27. |
How many days would be in a year if the distance between the earth and the sun were reduced to half of its present value (assuming circular orbit)? |
| A. | 365 days |
| B. | 730 days |
| C. | 329 days |
| D. | 129 days |
| Answer» E. | |
| 28. |
If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is |
| A. | 4 rad. S-1 |
| B. | 5 rad. S-1 |
| C. | 1.6 rad. S-1 |
| D. | 2.8 ms-1 |
| Answer» C. 1.6 rad. S-1 | |
| 29. |
The rotational K.E of hoop is equal to the |
| A. | Its translational K.E |
| B. | Half than its translational K.E |
| C. | Double than its translational K.E |
| D. | Four times than its translational K.E |
| Answer» B. Half than its translational K.E | |
| 30. |
The shaft of a motor rotates at a constant angular speed of 360rev/min. Angle turned through in 1 sec in radian is |
| A. | ? |
| B. | 3? |
| C. | 6? |
| D. | 12? |
| Answer» E. | |
| 31. |
The span of broad jump depends upon |
| A. | Mass of the jumper |
| B. | Height of jump |
| C. | Angle of projection |
| D. | None |
| Answer» D. None | |
| 32. |
What is outward force acting on a mass of 10 kg when rotating at one end an inelastic string 10m long at speed of 1m/s? |
| A. | 1N |
| B. | 10N |
| C. | 2N |
| D. | 100N |
| Answer» B. 10N | |
| 33. |
When a body is moving along a circular path it covers a certain angle in a given internal of time. Such type of motion is |
| A. | Vibratory motion |
| B. | Linear motion |
| C. | Rotatory motion |
| D. | Angular motion |
| Answer» E. | |
| 34. |
When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by |
| A. | Mass of a body |
| B. | Velocity of body |
| C. | Tension in the string |
| D. | Centripetal acceleration |
| Answer» D. Centripetal acceleration | |
| 35. |
When a body moves in a circle of radius r with linear speed V its centripetal force is |
| A. | MV/r2 |
| B. | MV/r |
| C. | MV2/r |
| D. | MV2/r2 |
| Answer» D. MV2/r2 | |
| 36. |
When a body moves in a circle, the angle between its linear velocity and angular velocity is always |
| A. | 180? |
| B. | 0? |
| C. | 90? |
| D. | 45? |
| Answer» D. 45? | |
| 37. |
When a wheel 1 m in diameter makes 30 rev min the linear speed of point on its rim in ms-1 is |
| A. | 2? |
| B. | ?/2 |
| C. | ? |
| D. | 20? |
| Answer» C. ? | |
| 38. |
Who discovered the inverse square law for gravity? |
| A. | Einstein |
| B. | Galileo |
| C. | Newtons |
| D. | Plank |
| Answer» D. Plank | |