Physics - Study Mode

[#1296] Refractive Index of glass with respect to water is
Correct Answer

(B) 9/8

Explanation

Solution: Refractive Index of glass with respect to water is 9/8.

[#1297] Which of the following colour of light deviates least through the prism?
Correct Answer

(D) Red

Explanation

Solution: Red light suffers the least amount of deviation and violet the most. When a white light is made to pass through a prism, formation of a spectrum of seven colors occurs showing white light is a combination of seven separate colours.

[#1298] Bending of light rays in denser medium is termed as:
Correct Answer

(C) Refraction

Explanation

Solution: The bending of light as it passes from one medium to another is called refraction. The angle and wavelength at which the light enters a substance and the density of that substance determine how much the light is refracted.

[#1299] The absolute refractive index of any medium is always:
Correct Answer

(A) More than one

Explanation

Solution: Absolute refractive index refers to a condition when light travels from vacuum to any other medium. As the absolute refractive index of a particular medium is supposed to be the refractive index of that medium in respect to the vacuum it will be the same for light as well. It will be greater than 1.

[#1300] Lens is made up of
Correct Answer

(B) Flint glass

Explanation

Solution: A lens is a transmissive optical device that focuses or disperses a light beam by the process of refraction. Flint glass is used as an optical glass because it has relatively high refractive index and low Abbe number than other materials.