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 particle with total energy E is moving in a potential energy region U(x)
  2. A short circuited coil is placed in a magnetic field varying with time. Electrical
  3. A body of mass m=3.513 kg is moving along the x-axis with a speed of 5 m/s
  4. The frequency of fundamental tone in an open organ pipe of length
  5. A ray enters a glass sphere of refractive index μ=√3 at an angle of incidence of 60⁰