Questions
A ray of light is incident on a glass sphere of refractive index 3/2. What should be the angle of incidence so that the ray which enters the sphere does not come out of the sphere ?
detailed solution
Correct option is C
r≥θc ∴μ=1sin rand from snell's law at first surface(1) sin i= μsin r ⇒sin i = 1 ⇒ i = 90oTalk to our academic expert!
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A convex lens is at a distance of 10 cm from a convex mirror of focal length 10 cm as shown in figure. A beam of light parallel to the principal axis is incident on the tens. After refraction through the lens, reflection at the mirror and again refraction through the lens, the final emergent beam refraces the path of the incident beam then focal length of the lens is
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