PAX PAX Physics Fundamentals

Question 1

Which of the following is the SI unit of force?

Accepted Answer

Newton

Answer

The Newton (N) is the SI unit of force, defined as kg·m/s².

Question 2

What happens to the speed of light as it moves from air into glass?

Accepted Answer

It decreases

Answer

Light slows down when it enters a denser medium like glass.

Question 3

Which type of energy is stored in a compressed spring?

Accepted Answer

Potential energy

Answer

A compressed spring stores elastic potential energy.

Question 4

An object in motion will remain in motion unless acted upon by an external force. This is Newton's:

Accepted Answer

First Law

Answer

Newton's First Law (law of inertia) states that objects maintain their state of motion unless a net force acts on them.

Question 5

What is the term for the bending of light as it passes from one medium to another?

Accepted Answer

Refraction

Answer

Refraction is the bending of light when it passes between media with different densities.

PAX - Pre-Admission Examination Practice Test