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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.
Related Questions: - A source is moving towards an observer with a speed of 20 m/s and having frequency
- A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- The point of suspension λ of a simple pendulum with normal time period T₁ is moving
- An ideal gas is compressed to half its initial volume by means of several processes.
- The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A source is moving towards an observer with a speed of 20 m/s and having frequency
- A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- The point of suspension λ of a simple pendulum with normal time period T₁ is moving
- An ideal gas is compressed to half its initial volume by means of several processes.
- The dimension of 1/2ε₀E², where ε₀ is permittivity of free space and E is electric field
Topics: Properties of Bulk Matter (130)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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