Navigate

Which of the following is an example of ideal black body?

Which of the following is an example of ideal black body?

Options

(a) Kajal
(b) Black board
(c) A pin hole in a box
(d) None of these

Correct Answer:

A pin hole in a box

Explanation:

A pin hole in a box is an example of black body. The pin hole allows radiations of different wavelengths to enter the box. Inside box all the radiations are absorbed. No waves are permitted to escape. Hence it acts like an ideal black body.

AIEEE2002
admin:

Related Questions

  1. A boat taken 2h to travel 8km and back in still water.If the velocity of water 4 km/h
  2. A person has a minimum distance of distinct vision as 50 cm. The power of lenses
  3. The intensity at the maximum in a Young’s double slit experiment is I₀.
  4. A small object of uniform density rolls up a curved surface with an initial velocity
  5. A projectile is fired at an angle of 45° with the horizontal