Advertisements
Advertisements
प्रश्न
A wave has a wavelength of 10-3 nm. Name the wave.
Advertisements
उत्तर
Gamma rays have a wavelength of 10-3 nm.
APPEARS IN
संबंधित प्रश्न
State the approximate range of wavelength associated with the ultraviolet rays.
In a Coolidge tube, electrons strike the target and stop inside it. Does the target get more and more negatively charged as time passes?
Find the maximum potential difference which may be applied across an X-ray tube with tungsten target without emitting any characteristic K or L X-ray. The energy levels of the tungsten atom with an electron knocked out are as follows.
| Cell containing vacancy | K | L | M |
| Energy in keV | 69.5 | 11.3 | 2.3 |
When 40 kV is applied across an X-ray tube, X-ray is obtained with a maximum frequency of 9.7 × 1018 Hz. Calculate the value of Planck constant from these data.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Electromagnetic waves of wavelengths λ1, λ2 and λ3 are used in a radar system, in water purifiers and in remote switches of TV, respectively.
- Identify the electromagnetic waves.
- Write one source for each of them.
Give any two uses of infrared waves.
Identify the electromagnetic wave whose wavelength range is from about 10-12 m to about 10-8 m. Write one use of this.
Why can a microwave oven heat food?
Where does infrared radiation lie relative to visible light?
How does the frequency of violet light compare with that of red light?
