Ch. 1. Physical World

Basic components of universe are -------.

• electron and proton

• proton and neutron

• energy and matter

• space and time

Every phenomenon in physics is measured in terms of -------.

• energy and matter

• space and time

• work and energy

• solid, liquid and gas

The branch of physics dealing with different types of motion is known as -------.

• mechanics

• thermodynamics

• kinematics

• relativistic mechanics

The strongest force among fundamental forces is -------.

• gravitational force

• electromagnetic force

• strong nuclear force

• weak nuclear force

The weakest force among fundamental forces is -------.

• gravitational force

• electromagnetic force

• strong nuclear force

• weak nuclear force

Electromagnetic force is ------- times that of weak nuclear force.

• $10^{11}$

• $10^{-11}$

• $10^{13}$

• $10^{-13}$

Strong nuclear force is ------- times stronger than electromagnetic force.

• 10

• 100

• 1000

• 10000

The unified force of electromagnetic force and weak nuclear force is known as -------.

• weak-electromagnetic force

• electro-weak force

• weak force

• electro nuclear force

Which one of the following is not a long-range force?

• gravitational force

• electric force

• magnetic force

• strong nuclear force

Which force acts between two charged particles due to their motion?

• electric force

• magnetic force

• electromagnetic force

• attractive force