Name the electromagnetic radiation to which waves of wavelength in the range of 10-2m belong. Give one use of this part of EM spectrum.
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What is the range of wavelength of electromagnetic waves that constitute visible radiation?
The range of electromagnetic waves is about 4000 A to 7000 A, which constitute visible radiation.
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Wavelength of radiation incident on a surface is 850 nm. Will the surface become visible when exposed to this radiation? Explain.
As we know, the range of wavelength of visible radiation is from 400 nm to 700 nm. The radiation having wavelength greater than 700 nm is termed as infra-red radiations...
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Name the electromagnetic radiations having the wavelength range from 1mm to 700nm.
Infrared radiations Applications: (i) Taking photograph during fog and smoke etc. (ii) for therapeutic purposes
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Name the electromagnetic radiation which can be produced by klystron or a magnetron valve.
Electromagnetic radiation produced by a Klystron or a Magnetron valve is microwave.
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Name the part of electromagnetic spectrum whose wavelength lies in the range of 10^-10m.
X-ray; used to study crystal structure
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Name the electromagnetic radiation used to destroy cancer cells and write its frequency range.
γ-rays. Frequency range 1019Hz—1022Hz
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To which part of the electromagnetic spectrum do the waves emitted by radioactive nuclei belong? What is its frequency range?
γ-rays Frequency range 1019Hz—1022Hz
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Which of the following waves can be polarized (i) Heat waves (ii) Sound waves? Give reason to support your answer.
(i) Heat waves: As heat waves are transverse or electromagnetic in nature.
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Assertion (A): Radio waves bend in a magnetic field. Reason (R): Radio waves are electromagnetic in nature.
(d) Radio waves are a type of electromagnetic radiation.
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Find the maximum wavelength of electromagnetic radiation which can create a hole—electron pair in germanium.
Band Gap = 0.65 eV, λ =? E = hc /λ = 1242 / 0.65 = 1910.7 x 10–9 m = 1.9 x10–5 m.
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