1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Pick the wrong answer in the context with rainbow.
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Two similar thin equi-convex lenses, of focal length f each, are kept coaxially in contact with each other such that the focal length of the combination is F1. When the space between the two lenses is filled with glycerin (which has the same refractive index (m = 1.5) as that of glass) then the equivalent focal length is F2. The ratio F1 : F2 will be :
3
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
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
Questions Asked from Geometrical Optics (MCQ (Single Correct Answer))
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