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Current Electricity

Question
CBSEENPH12038129

The following table gives the wavelength range of some constituents of this electromagnetic spectrum:

S. No.

Wavelength range

1

1 mm to 700 nm

2

400 nm to 1 nm

3

1 nm to 10-3 nm

4

< 10-3 nm

Select the wavelength range and name the electromagnetic waves that are:
(i) widely used in the remote switches of household electronic devices.
(ii) produced in nuclear reactions. 

Solution

(i) Infrared waves are used in the remote switches of household electronic devices and their wavelength vary from 1 mm to 700 nm.

(ii) Gamma rays are produced in nuclear reaction and it's wavelength range from 10-10 to 10-14 m.