Physics MCQs for NEET — Practice Questions with Answers

Speed of light in free space = $\frac{1}{\sqrt{{\mu }_0{\in }_0}}$

Speed of light in medium = $\frac{1}{\sqrt{\mu \in }}$

 $\frac{E_0}{B_0}=c$

 $\frac{B_0}{E_0}=c$

 $2.7\times {10}^{12} T$

 $9.0\times {10}^{-3} T$

 $3.0\times {10}^{-4} T$

 $3.0\times {10}^{-5} T$

zero

 $3\times {10}^4 V/m$

 $5.8\times {10}^{-9} V/m$

 $3.3\times {10}^{13 } V/m$

2 A

3 A

6 A

9 A

 $\gamma$-rays

X-rays

ultraviolet rays

microwaves

emits an electromagnetic wave

does not emit electromagnetic wave

produces a gravitational field

None of these

infra-red waves, radio waves, X-rays, visible light rays

Radio-waves, infra-red waves, visible light rays, X-rays

Radio waves, visible light rays, infra-red waves, X-rays

X-rays, visible light rays, infra-red wave, radio-waves

in general, X-rays have a larger wavelength than that of $\gamma$-rays

X-rays have a smaller wavelength than that of $\gamma$-rays

 $\gamma$-rays have smaller frequency than that of X-rays

wavelength and frequency of X-rays are both larger than those of $\gamma$-rays.

cosmic rays

gamma rays

 $\beta$-rays

X-rays

a < b, b < c

a > b, b > c

a > b, b > a

a < b, b > c