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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.
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- At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure
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Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Two particles A and B having equal charges, after being accelerated
- At 10⁰C the value of the density of a fixed mass of an ideal gas divided by its pressure
- The magnetic susceptibility is negative for
- The following four wires are made of the same material. Which of these will have
- A transistor is working in common emitter mode. Its amplification factor is 80
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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