MCQOPTIONS
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MCQOPTIONS
This section includes 23 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. |
A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/s. If the man’s weight is 50kg, his acceleration is ___________ |
| A. | 7.6 km/s2 |
| B. | 7.6 m/s2 |
| C. | 8.4 m/s2 |
| D. | 10 m/s2 |
| Answer» D. 10 m/s2 | |
| 2. |
A point mass m is placed inside a spherical shell of radius R and mass M at a distance R/2 from the centre of the shell. The gravitational force exerted by the shell on the point mass is ___________ |
| A. | GMm/R2 |
| B. | GMm/R |
| C. | Zero |
| D. | 4GMm/R2 |
| Answer» D. 4GMm/R2 | |
| 3. |
If radius of the earth is reduced, then ___________ |
| A. | Time duration is reduced |
| B. | Earth rotates slower |
| C. | Time period of earth decreases |
| D. | Duration of day increases |
| Answer» D. Duration of day increases | |
| 4. |
If the orbital radius of the earth is made 4 times, then find the duration of the year if earlier it was T? |
| A. | T |
| B. | 2T |
| C. | 4T |
| D. | 8T |
| Answer» E. | |
| 5. |
What is Black hole? |
| A. | Super surface of the atmosphere |
| B. | Ozone layer |
| C. | Super dense planetary material |
| D. | A hole on the surface of the earth |
| Answer» D. A hole on the surface of the earth | |
| 6. |
The escape velocity from the earth is 11.2km/sec. Another plant is having a mass 1000 times and radius 10 times that of the earth, then escape velocity at that planet will be ___________ |
| A. | 11.2km/sec |
| B. | 112km/sec |
| C. | 1.12km/sec |
| D. | 1120km/sec |
| Answer» C. 1.12km/sec | |
| 7. |
The escape velocity of a body projected vertically upwards from the surface of the earth is 11km/sec. If the body is projected at an angle of 45° with the vertically, the escape velocity will be ___________ |
| A. | 22km/sec |
| B. | 11km/sec |
| C. | 11√2km/sec |
| D. | 11/√2km/sec |
| Answer» C. 11√2km/sec | |
| 8. |
The escape velocity of a projectile from the earth is approximately ___________ |
| A. | 7km/sec |
| B. | 11.2km.sec |
| C. | 112km/sec |
| D. | 1.1km/sec |
| Answer» C. 112km/sec | |
| 9. |
The velocity with which a projectile must be fired so that it escapes the earth’s gravitational field doesn’t depend on ___________ |
| A. | Mass of the earth |
| B. | Mass of the projectile |
| C. | Radius of the orbit |
| D. | Universal gravitational constant |
| Answer» B. Mass of the projectile | |
| 10. |
If the earth loses its gravity, then for a body ___________ |
| A. | Weight becomes zero |
| B. | Mass becomes zero |
| C. | Neither mass nor weight is zero |
| D. | Both mass and weight are zero |
| Answer» B. Mass becomes zero | |
| 11. |
The mass of the moon is 1% of the mass of the earth. The ratio of gravitational pull on moon and that of moon in earth will be ___________ |
| A. | 1:1 |
| B. | 1:10 |
| C. | 1:100 |
| D. | 2:1 |
| Answer» B. 1:10 | |
| 12. |
IF_RADIUS_OF_THE_EARTH_IS_REDUCED,_THEN?$ |
| A. | Time duration is reduced |
| B. | Earth rotates slower |
| C. | Time period of earth decreases |
| D. | Duration of day increases |
| Answer» D. Duration of day increases | |
| 13. |
IF_THE_ORBITAL_RADIUS_OF_THE_EARTH_IS_MADE_4_TIMES,_THEN_FIND_THE_DURATION_OF_THE_YEAR_IF_EARLIER_IT_WAS_T?$ |
| A. | T |
| B. | 2T |
| C. | 4T |
| D. | 8T |
| Answer» E. | |
| 14. |
A man is standing on an international space station which is orbiting earth at an altitude 520km with a constant speed 7.6km/s. If the man’s weight is 50kg, his acceleration is$# |
| A. | 7.6 km/s<sup>2</sup> |
| B. | 7.6 m/s<sup>2</sup> |
| C. | 8.4 m/s<sup>2</sup> |
| D. | 10 m/s<sup>2</sup> |
| Answer» D. 10 m/s<sup>2</sup> | |
| 15. |
A point mass m is placed inside a spherical shell of radius R and mass M at a distance R/2 from the centre of the shell. The gravitational force exerted by the shell on the point mass is$ |
| A. | GMm/R<sup>2</sup> |
| B. | GMm/R |
| C. | Zero |
| D. | 4GMm/R<sup>2</sup> |
| Answer» D. 4GMm/R<sup>2</sup> | |
| 16. |
Black hole i? |
| A. | Super surface of the atmosphere |
| B. | Ozone layer |
| C. | Super dense planetary material |
| D. | A hole on the surface of the earth |
| Answer» D. A hole on the surface of the earth | |
| 17. |
The escape velocity from the earth is 11.2km/sec. Another plant is having a mass 1000 times and radius 10 times that of the earth, then escape velocity at that planet will be |
| A. | 11.2km/sec |
| B. | 112km/sec |
| C. | 1.12km/sec |
| D. | 1120km/sec |
| Answer» C. 1.12km/sec | |
| 18. |
The escape velocity of a body projected vertically upwards from the surface of the earth is 11km/sec. If the body is projected at an angle of 45° with the vertically, the escape velocity will be$ |
| A. | 22km/sec |
| B. | 11km/sec |
| C. | 11‚àö2km/sec |
| D. | 11/‚àö2km/sec |
| Answer» C. 11‚Äö√Ñ√∂‚àö‚Ć‚àö‚àÇ2km/sec | |
| 19. |
The escape velocity of a projectile from the earth is approximately |
| A. | 7km/sec |
| B. | 11.2km.sec |
| C. | 112km/sec |
| D. | 1.1km/sec |
| Answer» C. 112km/sec | |
| 20. |
The velocity with which a projectile must be fired so that it escapes the earth’s gravitational field doesn’t depend on$ |
| A. | Mass of the earth |
| B. | Mass of the projectile |
| C. | Radius of the orbit |
| D. | Universal gravitational constant |
| Answer» B. Mass of the projectile | |
| 21. |
A ball is dropped from a spacecraft revolving around the earth at a height of 120km. What will happen to the ball? |
| A. | It will go very far in the space |
| B. | It will move with the same speed tangentially to the spacecraft |
| C. | It will fall down to the earth gradually |
| D. | It will continue to move with the same speed along the original orbit of the spacecraft |
| Answer» E. | |
| 22. |
If the earth loses its gravity, then for a body |
| A. | Weight becomes zero |
| B. | Mass becomes zero |
| C. | Neither mass nor weight is zero |
| D. | Both mass and weight are zero |
| Answer» B. Mass becomes zero | |
| 23. |
The mass of the moon is 1% of the mass of the earth. The ratio of gravitational pull on moon and that of moon in earth will be |
| A. | 1:1 |
| B. | 1:10 |
| C. | 1:100 |
| D. | 2:1 |
| Answer» B. 1:10 | |