Light is (a) wave phenomenon (b) particle phenomenon (c) both particle and wave phenomenon.

Rubbing produces charges of equal,magnitude but of opposite nature on the two bodies because charges are created in pairs. This phenomenon of charging is called charging by friction. The net...

Given,n=1.5 and the speed of light in vacuum, c = 3x 108 ms-1. We know that the refractive index is given by the expression n =c/v where c is the...

(i) A stick partly immersed in water appears to be bent at the water surface. (ii) A pool of water appears less deep than it actually is.

Any of the following phenomena may happen: (i) A portion of incident light is reflected back into the first medium. (ii ) Some portion travels through the second medium along a changed...

Time taken by the laser beam to return to Earth after reflection from the Moon = 2.56 s Speed of light = 3 × 108 m/s Time taken by the laser beam to...

(c) its wavelength decreases but frequency remains unchanged EXPLANATION:    When light is refracted into a medium its speed changes but the frequency remains the same because the energy associated with a...

(b) Speed of light in water is smaller than the speed in vacuum. (c) Light shows interference. EXPLANATION:    The reflection can happen in both waves and particles. The photoelectric effect shows the...

(c) find the new position of a wavefront (d) explain Snell's law. EXPLANATION:    The Huygen's principle of secondary wavelets says that the points of a wavefront act as secondary sources of light...

(c) The wave delivers momentum p and energy E, p ≠ 0, E ≠ 0

(d) earth → sky  water → light  light → air  air →  water  sky → earth If someone is thirsty, then he would drink water. Now, water on that planet means light, so he would drink light.