Assertion & Reason Test: Electromagnetic Waves - Grade 12 MCQ

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Electromagnetic radiation exerts pressure.

Reason (R): Electromagnetic waves carry momentum and energy.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Dipole oscillation produces electromagnetic waves.

Reason (R): Accelerated charge produces electromagnetic waves.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Microwaves are considered suitable for radar systems.

Reason (R): Microwaves are of shorter wavelength.

Directions : In the following questions, A statement of Assertion (A) is followed by a statement of Reason (R). Mark the correct choice as.

Assertion (A): Gamma rays are electromagnetic waves having the smallest wavelength.

Reason (R): Gamma rays are having the lowest frequency.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Electromagnetic waves interact with matter and set up oscillations.

Reason : Interaction is independent of the wavelength of the electromagnetic wave.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Electromagnetic waves exert radiation pressure.

Reason : Electromagnetic waves carry energy.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The velocity of electromagnetic waves depends on electric and magnetic properties of the medium.

Reason : Velocity of electromagnetic waves in free space is constant.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Microwaves are better carriers of signals than optical waves.

Reason : Microwaves move faster than optical waves.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Electromagnetic waves are transverse in nature.

Reason : The electric and magnetic fields in electromagnetic waves are perpendicular to each other and the direction of propagation.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Electromagnetic waves carry energy and momentum.

Reason : Electromagnetic waves can be polarised.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The electromagnetic wave is transverse in nature.

Reason : Electromagnetic waves propagate parallel to the direction of electric and magnetic fields.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : The basic difference between various types of electromagnetic waves lies in their wavelength or frequencies.

Reason : Electromagnetic waves travel through vacuum with the same speed.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Infrared radiation plays an important role in maintaining the average temperature of earth.

Reason : Infrared radiations are sometimes referred to as heat waves