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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 maximum kinetic energy of the photoelectrons depends only on
- The area of cross-section of one limb of an U-tube is twice that of the other.
- A bimetallic strip consists of metals X and Y. It is mounted rigidly at the base as shown
- A particle is executing a simple harmonic motion. Its maximum acceleration
- Two thin lenses when placed in contact, then the power of combination is +10 D.
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The maximum kinetic energy of the photoelectrons depends only on
- The area of cross-section of one limb of an U-tube is twice that of the other.
- A bimetallic strip consists of metals X and Y. It is mounted rigidly at the base as shown
- A particle is executing a simple harmonic motion. Its maximum acceleration
- Two thin lenses when placed in contact, then the power of combination is +10 D.
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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