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 waves do not require any medium to travel.
Reason (R): Electromagnetic waves cannot travel through any medium.
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): X-ray travels with the speed of light.
Reason (R): X-ray is an e.m. wave.
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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): The Ozone layer present at the top of the stratosphere is very crucial for human survival.
Reason (R): Ozone layer prevents IR radiation.
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
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