Question

Assertion (A): Two astronauts cannot talk to each other on the moon as they do on the earth.

Reason (R): There is no atmosphere or material medium on the moon.

विकल्प

• If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

• If both Assertion and Reason are true, but Reason is not correct explanation of the Assertion.

• If Assertion is true, but the Reason is false.

• If Assertion is false, but the Reason is true.

Answer 1

If both Assertion and Reason are true and the Reason is correct explanation of the Assertion.

Explanation:

Assertion (A) is true: Astronauts cannot talk to each other directly on the Moon using sound as they do on Earth.

Reason (R) is true: Sound requires a material medium for propagation. Since the Moon has no atmosphere, sound cannot travel through the space between the astronauts.

Therefore, both A and R are true, and R is the correct explanation of A.