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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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- Electric field at a point of distance r from a uniformly charged wire of infinite
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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
- A high altitude, a body explodes at rest into two equal fragments with one fragment
- A L-C-R circuit with L=1.00 mH, C=10μF and R=50Ω, is driven with 5 V AC voltage.
- Electric field at a point of distance r from a uniformly charged wire of infinite
- Which logic gate is represented by the following combination of logic gate?
- The potential energy of a simple harmonic oscillator when the particle is half way
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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