MCQOPTIONS
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MCQOPTIONS
This section includes 11 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. |
Which of the following is an evidence to show that here must be force acting on earth and directed toward the sun? |
| A. | Deviation of the falling bodies towards east |
| B. | Revolution of the earth round the sun |
| C. | Phenomenon of day and night |
| D. | Apparent motion of sun around the earth |
| Answer» C. Phenomenon of day and night | |
| 2. |
What is the mass of a body that weighs 1N at a [place where g = 9.80m/s]? |
| A. | 0kg |
| B. | 1.02kg |
| C. | 0.102kg |
| D. | 102kg |
| Answer» D. 102kg | |
| 3. |
What is the effect of rotation of earth on the acceleration due to gravity? |
| A. | The acceleration due to gravity decreases |
| B. | The acceleration due to gravity increases |
| C. | There is no effect |
| D. | The acceleration due to gravity first increases and then decreases |
| Answer» B. The acceleration due to gravity increases | |
| 4. |
A clock fitted with a pendulum and another with a spring indicate correct time on earth. Which shows correct time on the moon? |
| A. | Clock fitted with pendulum |
| B. | Clock fitted with spring |
| C. | Both the clocks |
| D. | Neither of the clocks |
| Answer» D. Neither of the clocks | |
| 5. |
What is the weight of the body at the centre of the earth? |
| A. | Infinity |
| B. | Same as the weight of the body on the earth |
| C. | Zero |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 6. |
The earth revolves around the sun with an angular velocity of 2 10-7rad/s in a circular orbit of radius 1.5 108km. The force exerted by the sun on the earth in newton is? |
| A. | 30 10<sup>21</sup> |
| B. | 27 10<sup>39</sup> |
| C. | Zero |
| D. | 18 10<sup>25</sup> |
| Answer» B. 27 10<sup>39</sup> | |
| 7. |
If the distance between the earth and the sun were half its present value, the number of days in year would have been ___________ |
| A. | 64.5 |
| B. | 129 |
| C. | 182.5 |
| D. | 730 |
| Answer» C. 182.5 | |
| 8. |
If the radius of earth were to shrink by one percent (its mass remains the same), then the acceleration due to gravity on the earth s surface ___________ |
| A. | Would decrease |
| B. | Would remain unchanged |
| C. | Would increase |
| D. | Cannot be predicted |
| Answer» D. Cannot be predicted | |
| 9. |
Statement 1- The comets do not obey the Kepler s law of planetary motion.
|
| A. | Statement 1 and statement 2 are correct and statement 2 is the correct explanation of statement 1 |
| B. | Statement 1 and statement 2 are correct but statement 2 is not the correct explanation of statement 1 |
| C. | Statement 1 is true but statement 2 is false |
| D. | Both statement 1 and 2 are false |
| Answer» C. Statement 1 is true but statement 2 is false | |
| 10. |
The orbital speed of Jupiter is ___________ |
| A. | Greater than the orbital speed of earth |
| B. | Less than the orbital speed of earth |
| C. | Equal to the orbital speed of the earth |
| D. | Proportional to the distance from the earth |
| Answer» C. Equal to the orbital speed of the earth | |
| 11. |
The centre of mass of a body is often called ___________ |
| A. | Centre of attraction |
| B. | Centre of repulsion |
| C. | Centre of gravity |
| D. | Centre of acceleration |
| Answer» E. | |