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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: - what is the de-Broglie wavelength of the electron accelerated through a potential
- Zenor diode is used for
- A step-up transformer operates on a 230 V line and supplies a current of 2 A.
- A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°.
- A particle of mass M is executing oscillations about the origin on the x-axis.
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- what is the de-Broglie wavelength of the electron accelerated through a potential
- Zenor diode is used for
- A step-up transformer operates on a 230 V line and supplies a current of 2 A.
- A meter stick of mass 400 g is pivoted at one end and displaced through an angle 60°.
- A particle of mass M is executing oscillations about the origin on the x-axis.
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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