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← CBSE Class 12 PYQ
Ray Optics and Optical Instruments
CBSE Class 12 · Physics · 23 past questions
Topic
Refraction at spherical surfaces and lenses
1
Spherical mirrors
1
Combinations of lenses and mirrors
0
Optical instruments
0
Prism and dispersion
0
Reflection and refraction at plane surfaces
0
Total internal reflection and critical angle
0
Level
Easy
1
Moderate
0
Tough
0
Year
2026
0
2025
1
2024
1
2023
0
2022
0
1 of 23 ·
show all
Q10
2025
An equiconvex lens is made of glass of refractive index 1·55. If the focal length of the lens is 15·0 cm…
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