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प्रश्न
(a) Give a list of at least five radiations, in order of their increasing frequencies, which make up the complete electromagnetic spectrum.
(b) Which of the radiation mentioned by you in part (a) has the highest penetrating power.
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उत्तर
(a) Five radiations, in the order of their increasing frequencies are:
Infrared waves, Visible light, Ultraviolet, X-rays and Gamma rays.
(b) Gamma rays have the highest penetrating power.
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.
Can a hydrogen atom emit characteristic X-rays?
The X-ray beam emerging from an X-ray tube
Name the scientist who discovered Infra-red waves
State three properties of ultra-violet radiation similar to visible light.
Answer briefly.
Does an ordinary electric lamp emit EM waves?
The area to be covered for T.V telecast is doubled then the height of transmitting antenna (T.V tower) will have to be:-
The electric field intensity produced by the radiations coming from 100 W bulb at a 3 m distance is E. The electric field intensity produced by the radiations coming from 50 W bulb at the same distance is ______.
Electromagnetic waves with wavelength
- λ1 is suitable for radar systems used in aircraft navigation.
- λ2 is used to kill germs in water purifiers.
- λ3 is used to improve visibility in runways during fog and mist conditions.
Identify and name the part of the electromagnetic spectrum to which these radiations belong. Also arrange these wavelengths in ascending order of their magnitude.
