1
JEE Main 2022 (Online) 27th June Morning Shift
+4
-1 Consider a light ray travelling in air is incident into a medium of refractive index $$\sqrt{2n}$$. The incident angle is twice that of refracting angle. Then, the angle of incidence will be :

A
$${\sin ^{ - 1}}\left( {\sqrt n } \right)$$
B
$${\cos ^{ - 1}}\left( {\sqrt {{n \over 2}} } \right)$$
C
$${\sin ^{ - 1}}\left( {\sqrt {2n} } \right)$$
D
$$2{\cos ^{ - 1}}\left( {\sqrt {{n \over 2}} } \right)$$
2
JEE Main 2022 (Online) 26th June Morning Shift
+4
-1 In free space, an electromagnetic wave of 3 GHz frequency strikes over the edge of an object of size $${\lambda \over {100}}$$, where $$\lambda$$ is the wavelength of the wave in free space. The phenomenon, which happens there will be :

A
Reflection
B
Refraction
C
Diffraction
D
Scattering
3
JEE Main 2022 (Online) 25th June Evening Shift
+4
-1 The interference pattern is obtained with two coherent light sources of intensity ratio 4 : 1. And the ratio $${{{I_{\max }} + {I_{\min }}} \over {{I_{\max }} - {I_{\min }}}}$$ is $${5 \over x}$$. Then, the value of x will be equal to :

A
3
B
4
C
2
D
1
4
JEE Main 2022 (Online) 25th June Evening Shift
+4
-1 A light whose electric field vectors are completely removed by using a good polaroid, allowed to incident on the surface of the prism at Brewster's angle. Choose the most suitable option for the phenomenon related to the prism.

A
Reflected and refracted rays will be perpendicular to each other.
B
Wave will propagate along the surface of prism.
C
No refraction, and there will be total reflection of light.
D
No refraction, and there will be total transmission of light.
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Modern Physics
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