subject

Refractive Index

Physics ⇒ Light and Optics

Refractive Index starts at 9 and continues till grade 12. QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Refractive Index. 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 9
Describe how the refractive index affects the bending of light at the boundary between two media.
Explain the term 'relative refractive index'.
Explain why a pencil appears bent when placed in a glass of water.
Explain why light changes direction when it passes from one medium to another.
A light ray enters a medium with a refractive index of 1.6 at an angle of 0° (normal incidence). What is the angle of refraction?
A light ray travels from glass (n=1.5) to air (n=1.0). If the angle of incidence is 45°, calculate the angle of refraction.
A ray of light passes from air (n=1.00) into water (n=1.33). Does the light speed up or slow down?
A ray of light passes from medium A (n=1.2) to medium B (n=1.5). Will the ray bend towards or away from the normal?
The refractive index of water is approximately (1) 1.00 (2) 1.33 (3) 1.50 (4) 2.42
Which of the following has the highest refractive index? (1) Air (2) Water (3) Glass (4) Diamond
Which of the following is NOT a unit of refractive index? (1) No unit (2) m/s (3) cm/s (4) m
Which of the following is NOT affected by the refractive index? (1) Speed of light (2) Direction of light (3) Color of light (4) Frequency of light
Fill in the blank: The higher the refractive index of a medium, the ______ the speed of light in that medium.
Fill in the blank: The refractive index of a medium is always ______ than or equal to 1.
Fill in the blank: The refractive index of a medium is the ratio of the speed of light in vacuum to the speed of light in ______.
Fill in the blank: The refractive index of air is approximately ______.
True or False: Light bends towards the normal when it enters a medium with a higher refractive index.
True or False: The refractive index depends on the wavelength of light used.
True or False: The refractive index of a material can be used to identify it.
True or False: The refractive index of a medium can be determined using Snell's Law.