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Light — Reflection and Refraction (Class 10)

Spherical mirrors, mirror formula, refraction through lenses, lens formula, magnification.

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Q1 · Light — Reflection and Refraction (Class 10) · EASY
A concave mirror has a focal length of 20 cm. An object is placed at 30 cm from the mirror. What is the image distance?
Q2 · Light — Reflection and Refraction (Class 10) · MEDIUM
An object is placed 30 cm in front of a concave mirror of focal length 20 cm. What is the image distance?
Q3 · Light — Reflection and Refraction (Class 10) · HARD
A ray of light travels from air into glass with a refractive index of 1.5. If the angle of incidence is 60°, what is the angle of refraction (approximately)?