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 11

A ray of light passes from glass (n = 1.5) into water (n = 1.33). Will the ray bend towards or away from the normal?

Define absolute refractive index.

Describe how the refractive index changes with temperature for most liquids.

Explain the term 'relative refractive index'.

A light ray enters from air into a medium at an angle of 45° and is refracted at 30°. What is the refractive index of the medium? (n_air = 1.00)

A ray of light passes from glass (n = 1.5) into water (n = 1.33). Will the ray bend towards or away from the normal?

A student measures the speed of light in a liquid to be 2.25 × 10⁸ m/s. What is the refractive index of the liquid? (Speed of light in vacuum = 3.00 × 10⁸ m/s)

Calculate the speed of light in a medium with a refractive index of 1.5. (Speed of light in vacuum = 3.0 × 10⁸ m/s)

The refractive index of water is approximately (1) 1.00 (2) 1.33 (3) 1.50 (4) 2.42

Which color of visible light has the highest refractive index in glass? (1) Red (2) Green (3) Blue (4) Violet

Which of the following has the highest refractive index? (1) Air (2) Water (3) Glass (4) Diamond

Which of the following is NOT a factor affecting the refractive index of a medium? (1) Temperature (2) Wavelength of light (3) Pressure (4) Mass of the observer

Fill in the blank: The refractive index is a ________ quantity.

Fill in the blank: The refractive index of a medium is given by the formula n = ________.

Fill in the blank: The refractive index of air is approximately ________.

Fill in the blank: When light travels from a rarer to a denser medium, its speed ________.

True or False: The refractive index is always greater than or equal to 1.

True or False: The refractive index of a material is always the same for all colors of light.

True or False: The refractive index of a medium can be less than 1.

True or False: The refractive index of a medium can be measured using a prism.