Assertion: The energy of X-ray photon is greater than that of light (visible) photon. Reason: X-ray photon in vacuum travels faster than light photon.

Question

Assertion: The energy of X-ray photon is greater than that of light (visible) photon. Reason: X-ray photon in vacuum travels faster than light photon. (A) If both assertion and reason are true and reason is the correct explanation of assertion (B) If both assertion and reason are true but reason is not the correct explanation of assertion (C) If assertion is true but reason is false (D) If both assertion and reason are false

Tardigrade Admin · Accepted Answer

Energy of a photon E=(hc/λ). As λ for X-ray is smaller than light, so energy of X-rays is greater than that of light. Therefore, assertion is true. Here, reason is false as X-rays and light travel with same speed in vacuum.

Q. Assertion : The energy of X-ray photon is greater than that of light (visible) photon.
Reason : X-ray photon in vacuum travels faster than light photon.

If both assertion and reason are true and reason is the correct explanation of assertion

If both assertion and reason are true but reason is not the correct explanation of assertion

If assertion is true but reason is false

If both assertion and reason are false

Energy of a photon $E = \frac{h c}{λ}$ . As $λ$ for X-ray is smaller than light, so energy of X-rays is greater than that of light. Therefore, assertion is true. Here, reason is false as X-rays and light travel with same speed in vacuum.

Q. Assertion : The energy of X-ray photon is greater than that of light (visible) photon. Reason : X-ray photon in vacuum travels faster than light photon.