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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: - The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
- Light of wavelength 500 nm is incident on a metal with work function 2.28 eV.
- Application of Bernoulli’s theorem can be seen in
- A coil of N turns and mean cross-sectional area A is rotating with uniform angular
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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
- The current in a conductor varies with time t as I=2t+3t² Where I is in amperes
- Light of wavelength 500 nm is incident on a metal with work function 2.28 eV.
- Application of Bernoulli’s theorem can be seen in
- A coil of N turns and mean cross-sectional area A is rotating with uniform angular
- Two resistances 3Ω and 6Ω are connected in parallel
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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