Laws of Refraction
Physics ⇒ Light and Optics
Laws of Refraction starts at 8 and continues till grade 12.
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See sample questions for grade 12
A light ray enters from air into a medium with a refractive index of 2. If the angle of incidence is 45°, what is the angle of refraction? (Give your answer to two decimal places.)
A ray of light passes from medium A (n = 1.6) to medium B (n = 1.2). If the angle of incidence in medium A is 40°, calculate the angle of refraction in medium B.
A ray of light passes from medium X (n = 1.4) to medium Y (n = 1.6) at an angle of incidence of 50°. Calculate the angle of refraction in medium Y.
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.
A student observes that a coin at the bottom of a glass of water appears to be at a shallower depth than it actually is. Explain this observation using the laws of refraction.
Define the term 'refractive index' of a medium.
Describe what happens to the wavelength and frequency of light as it passes from air into glass.
Explain why a pencil appears bent when partially immersed in water.
Explain why the path of light is reversible according to the laws of refraction.
Explain why the refractive index of a medium is a dimensionless quantity.
If the angle of incidence is 0°, what will be the angle of refraction?
If the refractive index of a medium is 1.7, what is the critical angle for light passing from this medium into air? (Give your answer to two decimal places.)
If the refractive index of medium 1 with respect to medium 2 is 1.5, what is the refractive index of medium 2 with respect to medium 1?
If the refractive index of water is 1.33 and that of glass is 1.5, what is the refractive index of glass with respect to water?
State Snell's Law of Refraction.
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?
When light passes from air (n = 1.00) into water (n = 1.33) at an angle of incidence of 30°, what is the angle of refraction? (Give your answer to two decimal places.)
Which law states that the incident ray, the refracted ray, and the normal all lie in the same plane?
A light ray passes from air into a medium and the angle of incidence is 60°, while the angle of refraction is 45°. Calculate the refractive index of the medium to two decimal places.
A light ray travels from glass (n = 1.5) into an unknown liquid. If the angle of incidence in glass is 25° and the angle of refraction in the liquid is 32°, calculate the refractive index of the liquid to two decimal places.
