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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 person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel.The lift starts moving upwards wi
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- A small rod of bismuth is suspended freely between the poles of a strong electromagnet.
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
- The temperature coefficient of the resistance of a wire is 0.00125 per ⁰C.
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A person of mass 60 kg is inside a lift of mass 940 kg and presses the button on control panel.The lift starts moving upwards wi
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- A small rod of bismuth is suspended freely between the poles of a strong electromagnet.
- A particle moving along X-axis has acceleration f,at time t given by f=fₒ(1- t/T)
- The temperature coefficient of the resistance of a wire is 0.00125 per ⁰C.
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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