MCQOPTIONS
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MCQOPTIONS
This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Physics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
How do astronauts define up or down in space? |
| A. | There is no up or down in space |
| B. | The side facing the earth is down and the opposite side is up |
| C. | up or down is decided by the control centre on earth |
| D. | The direction of the spacecraft s power source is up and the opposite side is down |
| Answer» B. The side facing the earth is down and the opposite side is up | |
| 2. |
A person sitting in a chair in a satellite feels weightless because _____ |
| A. | the earth does not attract the objects in a satellite |
| B. | the normal force by the chair on the person balances the earth s attraction |
| C. | the normal force is zero |
| D. | the person in the satellite is not accelerated |
| Answer» D. the person in the satellite is not accelerated | |
| 3. |
An object is weightless inside a uniform spherical shell. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Why do the astronauts in the international space station experience weightlessness? |
| A. | The acceleration due to gravity at that height is zero |
| B. | They are falling towards the earth |
| C. | They have specially designed spacesuits for this purpose |
| D. | The gravity of the moon and earth cancel out at that altitude |
| Answer» C. They have specially designed spacesuits for this purpose | |
| 5. |
For an object experiencing weightlessness _____ |
| A. | its weight force is non-zero |
| B. | it has inertia |
| C. | it experiences a value of acceleration greater than the acceleration due to gravity |
| D. | it experiences a value of acceleration lesser than the acceleration due to gravity |
| Answer» C. it experiences a value of acceleration greater than the acceleration due to gravity | |