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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: - A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- A block of mass m moving at a velocity v collides with another block of mass 2m
- The total energy of a particle executing SHM is 80 J
- In an orbital motion, the angular momentum vector is
- Which of the following is suitable for the fusion process?
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A proton beam enters a magnetic field of 10⁻⁴ Wb/m² normally. If the specific charge
- A block of mass m moving at a velocity v collides with another block of mass 2m
- The total energy of a particle executing SHM is 80 J
- In an orbital motion, the angular momentum vector is
- Which of the following is suitable for the fusion process?
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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