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Class XII Physics Ray Optics 3
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Question 1
Two lenses of power –15D and 5D are contact with each other. The focal length of combination is
Question 2
Diameter of plano-convex lens is 6 cm and thickness at the centre is 3 mm. If speed of light in material of lens is 2 × 108 m/s, the focal length of the lens is
Question 3
The critical angle for total internal reflection of light going from medium I to medium II is given by the relation tan iC = 5/9. The refractive index of the Imedium with respect to the medium IIis -
Question 4
A ray of light from a denser medium strikes a rarer medium at an angle of incidence i. If the reflected and refracted rays are mutually perpendicular to each other, what is the value of critical angle?
Question 5
A ray of light passes from vacuum into a medium of refractive index μ, the angle of incidence is found to be twice the angle of refraction. Then the angle of incidence is
Question 6
A green light is incident from the water to the air - water interface at the critical angle (θ). Select the correct statement
Question 7
Figure shows an irregular block of material of refractive index 
. A ray of light strikes the face AB at an angle of 45 ° with normal. Where will the final image for Moderate (AB = 3m)
. A ray of light strikes the face AB at an angle of 45 ° with normal. Where will the final image for Moderate (AB = 3m) Question 8
A rectangular block of glass is placed on a mark made on the surface of the table and is viewed from the vertical position of the eye. If the refractive index of glass be μand its thickness d, then the mark will appear to be raised up by :
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Nov 28NEET & AIIMS
