Assertion: Mass of a moving photon varies inv | vedclass

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(B) The momentum of a photon is given by $p = \frac{h}{\lambda}$. Since $p = mc$ (where $m$ is the relativistic mass of the photon and $c$ is the spee

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If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.

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(B) The momentum of a photon is given by $p = \frac{h}{\lambda}$. Since $p = mc$ (where $m$ is the relativistic mass of the photon and $c$ is the speed of light), we have $mc = \frac{h}{\lambda}$, which implies $m = \frac{h}{c\lambda}$. Thus, the mass $m$ of a moving photon is inversely proportional to its wavelength $\lambda$. The Assertion is correct.The Reason states $E = mc^2$. While this is Einstein's mass-energy equivalence relation, it describes the energy of a particle at rest or the energy equivalent of a mass. It does not explain the relationship between the mass of a photon and its wavelength. Therefore, the Reason is not the correct explanation for the Assertion.

Assertion: Mass of a moving photon varies inversely as the wavelength.
Reason: Energy of the particle $= \text{mass} \times (\text{speed of light})^2$

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Assertion: Mass of a moving photon varies inversely as the wavelength.Reason: Energy of the particle $= \text{mass} \times (\text{speed of light})^2$