Acceleration Free Fall MCQ with Answers PDF Download – Test 96

MCQ 476: If a feather and an iron bar is released from a same height in a room without any air resistance. The first one to fall is:

1. Iron bar
2. Feather
3. Both at the same time
4. They won?t fall

MCQ 477: Vacuum in a vacuum flask prevents heat transfer through process of:

1. Conduction only
2. Convection only
3. Conduction and Convection
4. Radiation only

MCQ 478: With reference to the equation of W = F.s, where 'W' is work done, 'F' is force and 's' is displacement, we can conclude that 1 Joule is equal to:

1. 1 N m^-1, where N is Newton and m is meter
2. 1 N m, where N is Newtons and m is meter
3. 1 W m, where W is watts and m is meter
4. 1 W m^-1, where W is watt and m is meter

MCQ 479: Sound can be transmitted through a medium which:

1. contains charge
2. has higher density than air
3. contains molecules that vibrate
4. contains molecules that collide

MCQ 480: The higher the temperature the vibration of particles would be:

1. softer
2. vigorous
3. normal
4. may get vigorous or may become softer