1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
In total internal reflection when the angle of incidence is equal to the critical angle for the pair of media in contact, what will be angle of refraction?
2
NEET 2018
MCQ (Single Correct Answer)
+4
-1
The refractive index of the material of a prism
is $$\sqrt 2 $$ and the angle of the prism is 30°. One
of the two refracting surfaces of the prism is
made a mirror inwards, by silver coating. A
beam of monochromatic light entering the
prism from the other face will retrace its path
(after reflection from the silvered surface) if
its angle of incidence on the prism is
3
NEET 2018
MCQ (Single Correct Answer)
+4
-1
An astronomical refracting telescope will have
large angular magnification and high angular
resolution, when it has an objective lens of
4
NEET 2018
MCQ (Single Correct Answer)
+4
-1
An object is placed at a distance of 40 cm
from a concave mirror of focal length 15 cm.
If the object is displaced through a distance
of 20 cm towards the mirror, the displacement
of the image will be
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