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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: - Dependence of intensity of gravitational field (E) of earth with distance(r)
- Out of the following which pair of quantities does not have same dimensions?
- Which pair is isotonic?
- A uniform wire of resistance 9Ω is joined end-to-end to form a circle. Then
- The potential difference applied to an X-ray tube is 5 kV and the current through it
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Dependence of intensity of gravitational field (E) of earth with distance(r)
- Out of the following which pair of quantities does not have same dimensions?
- Which pair is isotonic?
- A uniform wire of resistance 9Ω is joined end-to-end to form a circle. Then
- The potential difference applied to an X-ray tube is 5 kV and the current through it
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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