subject

Refraction of Light

Physics ⇒ Light and Optics

Refraction of Light starts at 8 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Refraction of Light. How you perform is determined by your score and the time you take. When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
A light ray passes from glass (n = 1.5) into air (n = 1.0) at an angle of incidence of 45°. Calculate the angle of refraction.
A light ray passes from water (n = 1.33) to glass (n = 1.5) with an angle of incidence of 30°. Calculate the angle of refraction.
A ray of light in air strikes a glass slab at an angle of 60°. If the refractive index of glass is 1.5, what is the angle of refraction? (Give your answer to two decimal places.)
A ray of light passes from air into a medium with a refractive index of 2.0. 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 1 (n = 1.2) to medium 2 (n = 1.6) at an angle of incidence of 50°. Calculate the angle of refraction.
A ray of light passes from medium X (n = 1.4) to medium Y (n = 1.6). If the angle of incidence is 40°, what is the angle of refraction? (Give your answer to two decimal places.)
Describe the change in speed, wavelength, and frequency of light as it passes from air into water.
Describe what is meant by the term 'critical angle' in the context of refraction.
Explain why a swimming pool appears shallower than its actual depth when viewed from above.
Explain why stars appear to twinkle when observed from Earth.
Explain why the apparent depth of a coin placed at the bottom of a glass of water is less than its real depth.
If the critical angle for glass-air interface is 42°, what is the refractive index of glass? (Refractive index of air = 1)
If the refractive index of medium A with respect to medium B is 1.5, what is the refractive index of medium B with respect to medium A?
What is the law of refraction, also known as Snell's Law? State the mathematical expression.
When a ray of 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.)