Q141. Huygen's concept of secondary waves____:Physics — Optics, Nature of Light and Optical Instruments — Question 141 of 155A. Allows us to find the focal length of thick lensB. Gives us the magnifying power of microscopeC. Is a geometrical method to find the position of a wave frontD. Is used to determine the velocity of lightPractice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →