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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
- If the dimensions of a physical quantity are givenby Mᵃ Lᵇ Tᶜ, then the physical
- A wire of length L metre carrying a current I ampere is bent in the form
- The conducting loop in the form of a circle is placed in a uniform magneitc field
- If seperation between screen and source is increased by 2%. What would be the effect
- For having large magnification power of a compound microscope
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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