Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
The depolarising agent in a Leclanche cell is?
carbon rod
ammonium chloride
manganese (IV) oxide
zinc plate
Correct answer is C
No explanation has been provided for this answer.
Which of the following waves requires a material medium for its propagation?
Radio waves
Light waves
Sound waves
X-rays
Correct answer is C
- Electromagnetic waves are waves that have no medium to travel whereas mechanical waves need a medium for its transmission.
- sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum.
The average distance moved by a molecule between collisions is called
molecular distance
intermolecular distance
mean distance
mean free path
Correct answer is D
- the mean free path is the average distance traveled by a moving particle (such as an atom, a molecule, a photon) between successive impacts .
Which of the following machines does not apply the lever principle?
Claw hammer
Wheelbarrow
Single pulley
sugar tong
Correct answer is C
A single pulley is a device composed of a wheel on an axle over which a rope, cord, or similar implement is looped.
increase in value
decrease slightly
remain unchanged
drop to zero
Correct answer is A
No explanation has been provided for this answer.