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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 beam of light of wavelength 590 nm is focussed by a converging lens of diameter
- A uniform electric field and uniform magnetic field are acting along the same
- When germanium is doped with phosphorus what type of semiconductor is produced?
- Consider two particles of different masses. In which of the following situations
- A focal length of a lens is 10 cm. What is power of a lens in dioptre?
Topics: Properties of Bulk Matter
(130)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A beam of light of wavelength 590 nm is focussed by a converging lens of diameter
- A uniform electric field and uniform magnetic field are acting along the same
- When germanium is doped with phosphorus what type of semiconductor is produced?
- Consider two particles of different masses. In which of the following situations
- A focal length of a lens is 10 cm. What is power of a lens in dioptre?
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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