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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 car accelerates from rest at constant rate for first 10s and covers a distance x.
- A soap bubble oscillates with time period T, which in turn depends on the pressure
- Two simple harmonic motions of angular frequency 100 and 1000 rad s⁻¹ have the same
- The acceleration due to gravity near the surface of a planet of radius R and density d
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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
- A car accelerates from rest at constant rate for first 10s and covers a distance x.
- A soap bubble oscillates with time period T, which in turn depends on the pressure
- Two simple harmonic motions of angular frequency 100 and 1000 rad s⁻¹ have the same
- The acceleration due to gravity near the surface of a planet of radius R and density d
- The operation of a nuclear reactor is said to be critical, if the multiplication
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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