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प्रश्न
Name the scientist who discovered Infra-red waves
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उत्तर
Hershell
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संबंधित प्रश्न
Name the subjective property of light related to its wavelength.
Arrange the following radiations in the order of their increasing wavelength:
X-rays, infrared rays, ratio waves, gamma ray and microwaves.
What is the range of the wavelength of the following electromagnetic waves?
(A) Radio waves.
If the current in the circuit for heating the filament is increased, the cutoff wavelength
The potential difference applied to an X-ray tube is increased. As a result, in the emitted radiation,
(a) the intensity increases
(b) the minimum wavelength increases
(c) the intensity remains unchanged
(d) the minimum wavelength decreases.
Answer briefly.
Why high-frequency carrier waves are used for the transmission of audio signals?
An electron beam is accelerated by a potential difference V to hit a metallic target to produce X-rays. It produces continuous as well as characteristic X-rays. If λmin is the smallest possible wavelength of X-ray in the spectrum, the variation of log λmin with log V is correctly represented in:
The frequency of x-rays, y-rays and ultraviolet rays are respectively a, b and c. Then:-
The ozone layer absorbs
Choose the correct option related to wavelengths (λ) of different parts of the electromagnetic spectrum.
