6 Question-answer velocity of light 1. Velocity of electromagnetic waves in a medium depends upon (a) Thermal properties of medium (b) Mechanical and electrical properties of medium (c) Electrical and magnetic properties of medium (d) Mechanical and magnetic properties of medium Ans: (c) 2. This of the following statement is wrong. (a) Light travels faster in vacuum than air (b) The wavelength of light is longer than the wavelength of sound (c) Sound travels nearly 330 metres in one second (d) Speed of sound is much less than speed of light Ans: (b) 3. The first successful astronomical determination of the speed of light was made by (a) ...
Dive into a world of knowledge with our diverse blogs covering Biography, Science, Technology, Health, History, and much more. Stay informed, inspired, and updated with engaging and well-researched content across various topics.