Light - Study Mode
[#196] A water tank appears shallower when it is viewed from top due to
Correct Answer
(D) refraction
[#197] Light enters the eye from . . . . . . . .
Correct Answer
(B) Cornea
[#198] The process of glare resulting from a collision caused by a collision with particles floating in a fluid of light is called:
Correct Answer
(B) Tyndall effect
[#199] The energies E 1 and E 2 of the two radiations are 25eV and 50eV respectively. The relation between their wavelengths i.e. λ 1 and λ 2 will be . . . . . . . .
Correct Answer
(C) λ 1 = 2λ 2
Explanation
Solution: We are given two radiations with energies E 1 = 25 eV and E 2 = 50 eV, and we need to determine how their wavelengths λ 1 and λ 2 are related. The energy of radiation is inversely proportional to its wavelength, as described by the equation: E = h * c / λ Where: E is the energy of the radiation, h is Planck's constant, c is the speed of light, and λ is the wavelength. Since energy and wavelength are inversely proportional, we can express the ratio of the wavelengths in terms of the energies: λ 1 / λ 2 = E 2 / E 1 Substituting the values for the energies: λ 1 / λ 2 = 50 / 25 = 2 This means that the wavelength λ 1 is twice the wavelength λ 2 . Hence, λ 1 = 2λ 2 . Thus, the correct answer is Option C.
[#200] Who can be held responsible for the fact that the sun is visible 2 minutes before the actual sunrise and about 2 minutes after the actual sunset?
Correct Answer
(D) Atmospheric refraction