Physics MCQs - MCQtimes.com

Physics

A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?

Both the spheres will reach the ground simultaneously.

A will reach the ground first.

B will reach the ground first.

The question is incomplete because the masses of the spheres are not given.

If no air resistance is present, the rate of descent depends only on how far the object has fallen, no matter how heavy the object is. This means that two objects will reach the ground at the same time if they are dropped simultaneously from the same height. This statement follows from the law of conservation of energy.

Author: rikazzz Comment

Physics

A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?

Conduction and convection only

Conduction and radiation only

Convection and radiation only

Conduction, convection and radiation

A cup of hot coffee is placed on a metal table in a room can lose heat via conduction, convection and radiation.

Author: rikazzz Comment

Physics

The motion of a freely falling body is an example of ________ motion.

Uniformly accelerated

Non-uniformly accelerated

Constant velocity

Constant speed

The motion of a freely falling body is an example of uniformly accelerated motion. The motion of the body where the acceleration is constant is known as uniformly accelerated motion.

Author: rikazzz Comment

Physics

Boyle’s law is a relationship between

Pressure and volume

Volume and temperature

Volume and density

Pressure and temperature

Boyle’s law is a relationship between pressure and volume.

Author: rikazzz Comment

Geometrical Optics

The variation of focal length to form a sharp image on retina is called

accommodation