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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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Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- When a bullet of mass 10 g and speed 100 ms⁻¹ penetrates up to distance 1 cm
- A copper disc of radius 0.1 m is rotated about its centre, with 10 revolutions
- Water rises to a height h in capillary tube. If the length of capillary tube above
- A tuning fork gives 4 beats with 50 cm length of a sonometer
- In a LCR series circuit, the potential difference between the terminals of the inductor
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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