MCQOPTIONS
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MCQOPTIONS
This section includes 39 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
What will be the the radius of gyration of a circular plate of diameter 10cm? |
| A. | 1.5cm |
| B. | 2.0cm |
| C. | 2.5cm |
| D. | 3cm |
| Answer» D. 3cm | |
| 2. |
What is the formula of theorem of perpendicular axis? |
| A. | Izz = Ixx – Iyy |
| B. | Izz = Ixx + Ah2 |
| C. | Izz – Ixx = Iyy |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 3. |
What is the formula of radius of gyration?a) k2 = I/Ab) k2 = I2/Ac) k2 = I2/A2d) k2 = (I/ |
| A. | k2 = I/A |
| B. | k2 = I2/A |
| C. | k2 = I2/A2 |
| D. | k2 = (I/A)1/2 |
| Answer» B. k2 = I2/A | |
| 4. |
What is MOI? |
| A. | ml2 |
| B. | mal |
| C. | ar2 |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 5. |
Point, where the total volume of the body is assumed to be concentrated is ____________ |
| A. | Center of area |
| B. | Centroid of volume |
| C. | Centroid of mass |
| D. | All of the mentioned |
| Answer» C. Centroid of mass | |
| 6. |
The axis about which moment of area is taken is known as ____________ |
| A. | Axis of area |
| B. | Axis of moment |
| C. | Axis of reference |
| D. | Axis of rotation |
| Answer» D. Axis of rotation | |
| 7. |
What is the ratio of moment of inertia of a ring to a disc? Given that both have masses in the ratio 2:1 & radii in the ratio 1:2 respectively. |
| A. | 1:1 |
| B. | 2:1 |
| C. | 1:2 |
| D. | 1:4 |
| Answer» B. 2:1 | |
| 8. |
The moment of inertia of a solid sphere is 10kgm2. What will be the moment of inertia of a very thin spherical shell of the same mass and radius as that of the solid sphere? |
| A. | 16.67kgm2 |
| B. | 6kgm2 |
| C. | 10kgm2 |
| D. | 20kgm2 |
| Answer» B. 6kgm2 | |
| 9. |
What is the moment of inertia of a rod about an axis passing through the centre and perpendicular to its central axis? Given that mass of rod is 1kg, length = 10cm. |
| A. | 0.00083kgm2 |
| B. | 0.0833kgm2 |
| C. | 0.0033kgm2 |
| D. | 0.00033kgm2 |
| Answer» B. 0.0833kgm2 | |
| 10. |
A solid disc has a mass of 10kg and radius 1m. Find its radius of gyration. |
| A. | 1.414m |
| B. | 0.707m |
| C. | 1m |
| D. | 1.732 |
| Answer» C. 1m | |
| 11. |
Two cylinders have the same mass and radius. One is hollow and the other is solid. Which one will have the greater moment of inertia about the central axis? |
| A. | Hollow cylinder |
| B. | Solid cylinder |
| C. | Same for both |
| D. | Depends on length of cylinder |
| Answer» B. Solid cylinder | |
| 12. |
Moment of inertia, of a spinning body about an axis, doesn’t depend on which of the following factors? |
| A. | Distribution of mass around axis |
| B. | Orientation of axis |
| C. | Mass |
| D. | Angular velocity |
| Answer» E. | |
| 13. |
Assertion: When a body moves along a circular path, no work is done by the centripetal force.Reason: The centripetal force is used on moving the body along the circular path and hence no work is done. |
| A. | Both assertion and reason are true and reason is the correct explanation of the assertion |
| B. | Both assertion and reason are true but the reason is not the correct explanation of assertion |
| C. | Assertion is true but reason is false |
| D. | Both assertion and reason are false |
| Answer» D. Both assertion and reason are false | |
| 14. |
A ball moves in a frictionless inclined table without slipping. The work done by the table surface on the ball is ___________ |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Infinity |
| Answer» D. Infinity | |
| 15. |
A bullet is fired and gets embedded in a block kept on the table. If a table is frictionless, then ___________ |
| A. | Kinetic energy gets conserved |
| B. | Potential energy gets conserved |
| C. | Momentum gets conserved |
| D. | Kinetic energy and potential energy gets conserved |
| Answer» D. Kinetic energy and potential energy gets conserved | |
| 16. |
A simple pendulum hanging freely and at rest is vertical because in that position ___________ |
| A. | Kinetic energy is zero |
| B. | Potential energy is zero |
| C. | Kinetic energy is minimum |
| D. | Potential energy is minimum |
| Answer» E. | |
| 17. |
The kinetic energy acquires by a mass m in travelling distance d, starting from rest, under the action of a constant force is directly proportional to ___________ |
| A. | m |
| B. | m0 |
| C. | √m |
| D. | 1/√m |
| Answer» C. √m | |
| 18. |
Two identical balls A and B collide head on elastically. If velocities of A and B, before the collision are +0.5m/s and -0.3m/s respectively, then the velocities after the collision, are ___________ |
| A. | -0.5m/s and +0.3m/s |
| B. | +0.5m/s and +0.3m/s |
| C. | +0.3m/s and -0.5m/s |
| D. | -0.3m/s and +0.5m/s |
| Answer» E. | |
| 19. |
A particle of mass M is moving in a horizontal circle of radius R with uniform speed v. When it moves from one point to a diametrically opposite point, its ___________ |
| A. | Kinetic energy changes by (Mv)2/4 |
| B. | Momentum does not change |
| C. | Momentum changes by 2Mv |
| D. | Kinetic energy changes by (Mv)2 |
| Answer» D. Kinetic energy changes by (Mv)2 | |
| 20. |
A position dependent force, F = 7-2x+3x2-N acts on a small body of mass 2kg and displaces it from x = 0 to x = 5m. The work done in joules is ___________ |
| A. | 135 |
| B. | 270 |
| C. | 35 |
| D. | 70 |
| Answer» B. 270 | |
| 21. |
A body of mass 5kg is raised vertically to a eight of 10m by a force of 170N. The velocity of the body at this height will be ___________ |
| A. | 37m/s |
| B. | 22m/s |
| C. | 15m/s |
| D. | 9.8m/s |
| Answer» C. 15m/s | |
| 22. |
A gun fires a bullet of mass 50g with a velocity of 30m/s. Because of this, the gun is pushed back with a velocity of 1m/s. The mass of the gun is? |
| A. | 5.5kg |
| B. | 3.5kg |
| C. | 1.5kg |
| D. | 0.5kg |
| Answer» D. 0.5kg | |
| 23. |
A_BALL_MOVES_IN_A_FRICTIONLESS_INCLINED_TABLE_WITHOUT_SLIPPING._THE_WORK_DONE_BY_THE_TABLE_SURFACE_ON_THE_BALL_IS?$ |
| A. | Positive |
| B. | Negative |
| C. | Zero |
| D. | Infinity |
| Answer» D. Infinity | |
| 24. |
Assertion:_When_a_body_moves_along_a_circular_path,_no_work_is_done_by_the_centripetal_force$ |
| A. | |
| B. | Both assertion and reason are true and reason is the correct explanation of the assertion |
| C. | Both assertion and reason are true but the reason is not the correct explanation of assertion |
| Answer» D. | |
| 25. |
What will be the the radius of gyration of a circular plate of diameter 10cm? |
| A. | 1.5cm |
| B. | 2.0cm |
| C. | 2.5cm |
| D. | 3cm |
| Answer» D. 3cm | |
| 26. |
A bullet is fired and gets embedded in a block kept on the table. If a table is frictionless, the? |
| A. | Kinetic energy gets conserved |
| B. | Potential energy gets conserved |
| C. | Momentum gets conserved |
| D. | Kinetic energy and potential energy gets conserved |
| Answer» D. Kinetic energy and potential energy gets conserved | |
| 27. |
What is the unit of radius of gyration? |
| A. | m<sup>4</sup> |
| B. | m |
| C. | N |
| D. | m<sup>2</sup> |
| Answer» C. N | |
| 28. |
A simple pendulum hanging freely and at rest is vertical because in that position |
| A. | Kinetic energy is zero |
| B. | Potential energy is zero |
| C. | Kinetic energy is minimum |
| D. | Potential energy is minimum |
| Answer» E. | |
| 29. |
What is the formula of theorem of parallel axis? |
| A. | I<sub>AD</sub> = I<sub>G</sub> + Ah |
| B. | I<sub>AB</sub> = Ah<sup>2</sup> + IG |
| C. | I<sub>AB</sub> = I<sub>G</sub> – Ah<sup>2</sup> |
| D. | I<sub>AB</sub> = I<sub>G</sub> + I<sub>xx</sub> |
| Answer» C. I<sub>AB</sub> = I<sub>G</sub> ‚Äö√Ñ√∂‚àö√ë‚àö¬® Ah<sup>2</sup> | |
| 30. |
The kinetic energy acquires by a mass m in travelling distance d, starting from rest, under the action of a constant force is directly proportional to |
| A. | m |
| B. | m<sup>0</sup> |
| C. | ‚àöm |
| D. | 1/‚àöm |
| Answer» C. ‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇm | |
| 31. |
What is the formula of theorem of perpendicular axis ? |
| A. | I<sub>zz</sub> = I<sub>xx</sub> – I<sub>yy</sub> |
| B. | I<sub>zz</sub> = I<sub>xx</sub> + Ah<sup>2</sup> |
| C. | I<sub>zz</sub> – I<sub>xx</sub> = I<sub>yy</sub> |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 32. |
Two identical balls A and B collide head on elastically. If velocities of A and B, before the collision are +0.5m/s and -0.3m/s respectively, then the velocities after the collision, are |
| A. | -0.5m/s and +0.3m/s |
| B. | +0.5m/s and +0.3m/s |
| C. | +0.3m/s and -0.5m/s |
| D. | -0.3m/s and +0.5m/s |
| Answer» E. | |
| 33. |
What is the formula of radius of gyration ? |
| A. | k<sup>2</sup> = I/A |
| B. | k<sup>2</sup> = I<sup>2</sup>/A |
| C. | k<sup>2</sup> = I<sup>2</sup>/A<sup>2</sup> |
| D. | k<sup>2</sup> = (I/A)<sup>1/2</sup> |
| Answer» B. k<sup>2</sup> = I<sup>2</sup>/A | |
| 34. |
A particle of mass M is moving in a horizontal circle of radius R with uniform speed v. When it moves from one point to a diametrically opposite point, its |
| A. | Kinetic energy changes by (Mv)<sup>2</sup>/4 |
| B. | Momentum does not change |
| C. | Momentum changes by 2Mv |
| D. | Kinetic energy changes by (Mv)<sup>2</sup> |
| Answer» D. Kinetic energy changes by (Mv)<sup>2</sup> | |
| 35. |
What is MOI ? |
| A. | ml<sup>2</sup> |
| B. | mal |
| C. | ar<sup>2</sup> |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 36. |
A position dependent force, F = 7-2x+3x2-N acts on a small body of mass 2kg and displaces it from x = 0 to x = 5m. The work done in joules is |
| A. | 135 |
| B. | 270 |
| C. | 35 |
| D. | 70 |
| Answer» B. 270 | |
| 37. |
Point where the total volume of body is assumed to be concentrated is |
| A. | Center of area |
| B. | Centroid of volume |
| C. | Centroid of mass |
| D. | All of the mentioned |
| Answer» C. Centroid of mass | |
| 38. |
A body of mass 5kg is raised vertically to a eight of 10m by a force of 170N. The velocity of the body at this height will be |
| A. | 37m/s |
| B. | 22m/s |
| C. | 15m/s |
| D. | 9.8m/s |
| Answer» C. 15m/s | |
| 39. |
A gun fires a bullet of mass 50g with a velocity of 30m/s. Because of this, the gun is pushed back with a velocity of 1m/s. The mass of the gun is |
| A. | 5.5kg |
| B. | 3.5kg |
| C. | 1.5kg |
| D. | 0.5kg |
| Answer» D. 0.5kg | |