Match List I (Wavelength range of electromagnetic spectrum) with List II (Method of production of these waves) and select the correct option from the options given below the lists. List I (a) 700 nm to 1 mm (b) 1 nm to 400 nm (c)

Question

Match List I (Wavelength range of electromagnetic spectrum) with List II (Method of production of these waves) and select the correct option from the options given below the lists. List I (a) 700 nm to 1 mm (b) 1 nm to 400 nm (c) < 10^-3 nm (d) 1 mm to 0.1 m List II (i) Vibration of atoms and molecules. (ii) Inner shell electrons in atoms moving from one energy level to a lower level. (iii) Radioactive decay of the nucleus. (iv) Magnetron valve.

Accepted Answer

(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv). The correct option matches the wavelength ranges with their respective methods of production: infrared waves (700 nm to 1 mm) are produced by the vibration of atoms and molecules, ultraviolet waves (1 nm to 400 nm) result from inner shell electrons transitioning to lower energy levels, gamma rays (< 10^-3 nm) are produced by radioactive decay, and microwaves (1 mm to 0.1 m) are generated by devices like magnetron valves.

Solution

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