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प्रश्न
Arrange the following radiations in the order of their increasing wavelength:
X-rays, infrared rays, ratio waves, gamma ray and microwaves.
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उत्तर
Gamma rays < X-rays < infrared rays < micro waves < radio waves.
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संबंधित प्रश्न
Name the high energetic invisible electromagnetic waves which help in the study of the structure of crystals
Why are infra-red waves often called heat waves? Explain.
An X-ray beam can be deflected
The distance between the cathode (filament) and the target in an X-ray tube is 1.5 m. If the cutoff wavelength is 30 pm, find the electric field between the cathode and the target.
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
The short-wavelength limit shifts by 26 pm when the operating voltage in an X-ray tube is increased to 1.5 times the original value. What was the original value of the operating voltage?
(Use Planck constant h = 6.63 × 10-34 Js= 4.14 × 10-15 eVs, speed of light c = 3 × 108 m/s.)
Two waves A and B have wavelength 0.01 Å and 9000 Å respectively.
Name the two waves. compare the speeds of these waves when they travel in vacuum.
Answer briefly.
Give two uses of radio waves.
Answer briefly.
Name the most harmful radiation entering the Earth's atmosphere from outer space.
Identify the electromagnetic wave whose wavelength range is from about 10-12 m to about 10-8 m. Write one use of this.
