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Welders wear special goggles or face masks with glass windows to protect their eyes from electromagnetic radiations.

Monjur Alahi

Welders wear special goggles or face masks with glass windows to protect their eyes from electromagnetic radiations. Name the radiations and write the range of their frequency


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Salim Ahmed Kawsar

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Ultraviolet radiations
OR
Radiations above violet (in VIBGYOR)
Frequency range 1015 –1017Hz.
Hint: Frequecy of visible light is of the order of 1014Hz.

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Salim Ahmed Kawsar

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ultraviolet rays.

The wavelength of UV rays is 400 nm to 1 nm.

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