Question

define any three of following a.luminous
b.circular motion
c.Transparent
d.periodic motion
e. opaque​

Answer 1

Answer:

a) 1a : emitting or reflecting usually steady, suffused, or glowing light luminous objects—the nebula, the stars, the planets— Lincoln La Paz. b : of or relating to light or to luminous flux. 2 : bathed in or exposed to steady light luminous with sunlight. 3 : clear, enlightening a luminous explanation

b)The movement of a body following a circular path is called a circular motion. Now, the motion of a body moving with constant speed along a circular path is called Uniform Circular Motion. Here, the speed is constant but the velocity changes.

c)Materials like air, water, and clear glass are called transparent. When light encounters transparent materials, almost all of it passes directly through them. Glass, for example, is transparent to all visible light. Translucent objects allow some light to travel through them.