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प्रश्न
Choose the correct option.
The EM wave emitted by the Sun and responsible for heating the Earth’s atmosphere due to greenhouse effect is
पर्याय
Infra-red radiation
X-ray
Microwave
Visible light
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उत्तर
Infra-red radiation
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संबंधित प्रश्न
To which part of electromagnetic spectrum does a wave of frequency 3 × 1013 Hz belong?
Name the high energetic invisible electromagnetic waves which help in the study of the structure of crystals
A wave has a wavelength of 10-3 nm. Name the wave.
What is the range of the wavelength of the following electromagnetic waves?
(A) Radio waves.
Name the region beyond the violet end of the spectrum called.
Can X-rays be used for photoelectric effect?
X-ray and visible light travel at the same speed in vacuum. Do they travel at the same speed in glass?
The energy of a photon of a characteristic X-ray from a Coolidge tube comes from
Moseley's Law for characteristic X-ray is √v = a(Z − b). Here,
Consider a photon of continuous X-ray and a photon of characteristic X-ray of the same wavelength. Which of the following is/are different for the two photons?
The Kβ X-rays from certain elements are given below. Draw a Moseley-type plot of √v versus Z for Kβ radiation.
| Element | Ne | P | Ca | Mn | Zn | Br |
| Energy (keV) | 0.858 | 2.14 | 4.02 | 6.51 | 9.57 | 13.3 |
The electric current in an X-ray tube (from the target to the filament) operating at 40 kV is 10 mA. Assume that on an average, 1% of the total kinetic energy of the electron hitting hte target are converted into X-rays.
(a) What is the total power emitted as X-rays and (b) how much heat is produced in the target every second?
Name the scientist who discovered Microwaves
Name the scientist who discovered Ultraviolet rays
Identify the part of the electromagnetic spectrum used in
(i) radar and
(ii) eye surgery. Write their frequency range.
Name the radiation of the electromagnetic spectrum which is used for the following:
For taking photographs of the sky during the night and foggy conditions . Give the frequency range
State three properties of infrared radiations similar to that of visible light.
What are the ultraviolet rays?
Answer briefly.
What are radio waves?
All components of the electromagnetic spectrum in a vacuum have the same ______
Electromagnetic waves with wavelength
- λ1 is used in satellite communication.
- λ2 is used to kill germs in water purifies.
- λ3 is used to detect leakage of oil in underground pipelines.
- λ4 is used to improve visibility in runways during fog and mist conditions.
- Identify and name the part of electromagnetic spectrum to which these radiations belong.
- Arrange these wavelengths in ascending order of their magnitude.
- Write one more application of each.
What is called the invisible spectrum?
Which relation connects the speed of light in vacuum, frequency, and wavelength?
Which devices commonly produce microwaves?
Why can a microwave oven heat food?
Where does infrared radiation lie relative to visible light?
Which set consists of applications of infrared radiation?
Where do ultraviolet rays lie relative to visible light?
Which electromagnetic radiation has the highest frequency and shortest wavelength?
