According to photon theory of light which of the following physical quantities associated with a photon do not/does not change as it collides with an electron in vacuum
According to photon theory of light which of the following physical quantities associated with a photon do not/does not change as it collides with an electron in vacuum
- A
Energy and momentum
- B
Speed and momentum
- C
Speed only
- D
Energy only
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Average force exerted on a non-reflecting surface at normal incidence is $2.4 \times 10^{-4} \mathrm{~N}$. If $360 \mathrm{~W} / \mathrm{cm}^2$ is the light energy flux during span of $1$ hour $30$ minutes. Then the area of the surface is:
Average force exerted on a non-reflecting surface at normal incidence is $2.4 \times 10^{-4} \mathrm{~N}$. If $360 \mathrm{~W} / \mathrm{cm}^2$ is the light energy flux during span of $1$ hour $30$ minutes. Then the area of the surface is:
- [JEE MAIN 2024]
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