Previous Year Questions
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Ray Optics And Optical Instruments

- It's good to be already prepared. Go through the previous year questions
1
JEE Mains
2
JEE Advanced
A thin convex lens is made of two materials with refractive indices and , as shown in figure. The radius of curvature of the left and right spherical surfaces are equal. f is the focal length of the lens when . The focal length is when and . Assuming and , the correct statement(s) is/are?
This question has multiple correct options
A
If , then
B
For and , the value of will be cm(round off to nd decimal place)
C
D
The relation between and remains unchanged if both the convex surfaces are replaced by concave surfaces of the same radius of curvature
For an isosceles prism of angle and refractive index , it is found that the angle of minimum deviation . Which of the following option(s) is/are correct? 
This question has multiple correct options
A
At minimum deviation, the incident angle and the refracting angle at the first refracting surface are related by
B
For this prism the refractive index and the angle of prism A are related as
C
For this prism, the emergent ray at the second surface will be tangential to the surface when the angle of incidence at the first surface is
D
For the angle of incidence , the ray inside the prism is parallel to the base of the prism