ReasoningModerate4 marks
What do you understand by the term 'Scattering of light'? Which colour of white light is scattered the least and why?
Topic: Electromagnetic spectrum / scattering
Previous-year question practice database
Answer
Exam answer
Scattering is the redirection of light in different directions by particles of a medium. Red is scattered least because it has the longest wavelength in visible light.
More from Spectrum
When a blackened bulb thermometer is moved beyond the red region of the visible spectrum, there is a rapid rise in the temperature. This is due to the presence of :
(a) Infrared radiations
(b) Ultraviolet radiations
(c) X-rays
(d) Radio waves2026Assertion (A) : Tiny air molecules scatter blue light more than red light.
Reason (R) : The refractive index of a medium is greater for blue light than red light.
(a) (A) is true but (R) is false.
(b) (A) is false but (R) is true.
(c) Both (A) and (R) are true and (R) is correct explanation of (A).
(d) Both (A) and (R) are true and (R) is not the correct explanation of (A).2026Name the electromagnetic radiation used to detect fake currency.2026Which one of the following combinations is the correct ascending order of electromagnetic waves in terms of wavelength?
(a) Gamma-rays, visible light, microwaves
(b) Microwaves, visible light, gamma-rays
(c) Gamma-rays, microwaves, visible light
(d) Microwaves, gamma-rays, visible light2025for which a quartz prism is used to study the spectrum.2025which are used in remote sensing devices.2025