Question

a black body which is at a high temperature T K radiates energy at the rate of E Wm -2. When the temperature falls to T/2 K, the radiated energy will be

Answer 1

Answer:

Q1. Rate will get _______ when compounding is done semi-annually.

a) Twice

b) half

c) four times

d) one-fourth

Q2 __________ is a polyhedron whose base is a polygon and lateral faces are triangles.

a) cuboid

b) prism

c) pyramid

d ) polygon