Question

Assertion (A): The speed of sound increases with increase in temperature of the gas.

Reason (R): For 1°C rise in temperature, the speed of sound in air increases nearly by 0.51⁢ ms⁻¹.

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 Assertion is true, but the Reason is false.

Explanation:

Assertion (A) is true. The speed of sound in a gas increases as its temperature increases.

Reason (R) is false. In air, the speed of sound increases by about 0.6 m s⁻¹ (approximately 0.61 ms⁻¹) for every \(1^\circ\text{C}\) rise in temperature, not \(0.51\ \text{m s}^{-1}\).

Therefore, A is true, but R is false.