Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Electromagnetic Waves

Question:

Assertion (A) : Short wave band are used for transmission of radio waves to a large distance.

Reason (R) : Short waves are reflected from ionosphere.

Options:

Both (A) and (R) are true and (R) is the correct explanation of (A).

Both (A) and (R) are true but(R) is NOT the correct explanation of (A).

(A) is true but (R) is false.

Both (A) and (R) are false.

Correct Answer:

Both (A) and (R) are true and (R) is the correct explanation of (A).

Explanation:

Short waves are used in long distance broadcast, because they are reflected by the ionosphere back to the surface of the earth, in this way long distance can be reached