Questions
Choose the correct statement(s)
a
The image of sun (consider point source of light) can never be produced at center of glass sphere, (assuming the space between sphere and sun is filled with air),
b
If a lens having μ=1.5 has focal length 20 cm in air, then its focal length will be 60 cm when it is immersed in water of refractive index 43
c
The laws of reflection and refraction are true for all surface and pairs of media at the point of incidence.
d
The thick lenses give coloured images due to dispersion of light.
detailed solution
Correct option is A
A) μ+R=μ−1+R (not possible)The higher the refractive index of the material of sphere (μ), the closer one could come to fulfilling the objective B) fafw = μ-μwμ-μaμaμw=32−4332−1143=16×2×34=14⇒fw = 80 cmTalk to our academic expert!
Similar Questions
A semi-cylinder made of transparent plastic has a refractive index n = and a radius of R. There is a narrow incident light ray perpendicular to the flat side of the semi cylinder at d distance from the axis of symmetry.
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