X-rays are electromagnetic radiations of...

X-rays are electromagnetic radiations of wavelength greater than that of visible light.

Answer

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Knowledge Check

X-rays are electromagenetic radiation whose wavelengths are of the order of :

A

1 metre

B

`10^(-1)` metre

C

`10^(-5)` metre

D

`10^(-10)` metre

The electrical conductivity of a semiconductor increases when electromagnetic radiation of wavelength shorter than 2480 nm is incident on it. The band gap of the semiconductor is

A

`0.3 eV`

B

`0.5 eV`

C

`0.7 eV`

D

`1.1 eV`

Visible radiation has wavelength

A

`lambda gt 8000 Å`

B

`lambda = 1` millimeter

C

`lambda = 4000 Å` to 8000 Å

D

`lambda lt 4000 Å`

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