MCQ
The momentum of photon is :
- Ah
- Bhc
- ✓$\frac{ hv }{ c }$
- D$\frac{ c }{ hv }$
✓
Answer
Correct option: C.
$\frac{ hv }{ c }$
(C) - $\frac{ hv }{ c }$
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
It is not convenient to use a spherical Gaussian surface to find the electric field due to an electric dipole using Gauss’s theorem because
A plane electromagnetic wave of wavelength $\lambda $ has an intensity $I.$ It is propagating along the positive $Y-$ direction. The allowed expressions for the electric and magnetic fields are given by
→A wire has resistance of $24\,\Omega$ is bent in the following shape. The effective resistance between $A$ and $B$ is .............. $\Omega$
→Shown in the figure is a circular loop of radius r and resistance $R$.$A$ variable magnetic field of induction $B = {B_0}{e^{ - t}}$ is established inside the coil. If the key $(K)$ is closed, the electrical power developed right after closing the switch is equal to
→Electric lines of force about a positive point charge are:
A proton is projected with velocity $\overrightarrow{ V }=2 \hat{ i }$ in a region where magnetic field $\overrightarrow{ B }=(\hat{i}+3 \hat{j}+4 \hat{k})\; \mu T$ and electric field $\overrightarrow{ E }=10 \hat{ i } \;\mu V / m .$ Then find out the net acceleration of proton (in $m / s ^{2}$)
→Two coherent monochromatic light beams of intensities $I$ and $4I$ are superposed. The maximum and minimum possible intensities in the resulting beam are :
→$50\%$ of the $X-$ray coming from a Coolidge tube is able to pass through a $0.1\ mm$ thick aluminium foil. The potential difference between the target and the filament is increased. The thickness of the aluminium foil that will allow $50\%$ of the $X-$ray to pass through will be:
→Red light is generally used to observe diffraction pattern from single slit. If blue light is used instead of red light, then diffraction pattern
The equivalent capacitance between $A$ and $B$ is
→