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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
- The energy of a hydrogen atom in the ground state is – 13.6 eV. The energy of a He⁺ ion
- Electron in hydrogen atom first jumps from third excited state to second excited
- What will be the ratio of the distance moved by a freely falling body from rest in 4th
- A bucket full of water is revolved in a vertical circle of 2m
- Two slits in Young’s experiment have widths in the ratio 1:25. The ratio of intensity
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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