Forces and Motion Multiple Choice Questions (MCQs) PDF Download - 32

A person of mass 50 kg flies to moon, his weight at the moon would be (earth's gravity = 10 m s^-2, moon's gravity = 1.6 m s^-2)

1. 31.25 N
2. 500 N
3. 51.6 N
4. 80 N

Diagram that shows magnitude and direction is termed as

1. Scalar diagram
2. Force diagram
3. Dimer diagram
4. Vector diagram

While going through a heap of junk in her garage, Jackie found an uncalibrated mercury thermometer. After a few experiments, she succeeded in calibrating it. Her notes show that the ice point of the thermometer corresponds to 3 cm while the steam point corresponds to 30 cm of mercury. If Jackie's calculations are fine, then length = 15 cm would correspond to

1. 46 °C
2. 44 °C
3. 42 °C
4. 40 °C

In the process of melting, thermal energy is

1. taken in
2. given out
3. neither given out nor taken in
4. thermal energy isn't needed

Kinetic component of internal energy is due to

1. the vibration of matter
2. the intermolecular forces
3. the collision of particles
4. the vibration of particles