Refraction of Light
Physics ⇒ Light and Optics
Refraction of Light starts at 8 and continues till grade 12.
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See sample questions for grade 11
A light ray in air strikes a glass slab at an angle of 45°. If the refractive index of glass is 1.5, what is the angle of refraction? (Use sin-1(0.471) ≈ 28°)
A light ray passes from air into a medium and bends away from the normal. What can you conclude about the refractive index of the medium compared to air?
A ray of light passes from glass (n = 1.5) into water (n = 1.33) at an angle of incidence of 30°. Calculate the angle of refraction.
A ray of light passes from medium A (n = 1.6) to medium B (n = 1.2). If the angle of incidence is 40°, calculate the angle of refraction.
A ray of light passes from water (n = 1.33) to air (n = 1.00) at an angle of incidence of 60°. Calculate the angle of refraction.
Describe what happens to the wavelength and frequency of light as it passes from air into glass.
Describe what is meant by the term 'critical angle' in the context of refraction.
Explain why a pencil appears bent when partially immersed in water.
Explain why stars appear to twinkle at night.
Explain why the bottom of a swimming pool appears to be raised when viewed from above.
If the angle of incidence is 0°, what will be the angle of refraction?
If the refractive index of medium A with respect to medium B is 2, what is the refractive index of medium B with respect to medium A?
Light travels from medium X into medium Y. If the speed of light in X is greater than in Y, does the light bend towards or away from the normal?
State Snell's Law of refraction.
State two applications of refraction of light in daily life.
The refractive index of glass with respect to air is 1.5. If the speed of light in air is 3.0 × 108 m/s, what is the speed of light in glass?
What is refraction of light?
