Match List–I (Electromagnetic wave type) with List–II (its association/application) and select the correct option from the choices given below the lists : List – I List – II(a)Infrared waves(i)To treat muscular strain(b)Radio waves(ii)For broadcasting(c)X–rays(iii)To detect fracture of bones(d)Ultraviolet rays(iv)Absorbed by the ozone layer of the atmosphere

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Electromagnetic Waves Practice Q & A
Q:1

Match List–I (Electromagnetic wave type) with List–II (its association/application) and select the correct option from the choices given below the lists :

	List – I		List – II
(a)	Infrared waves	(i)	To treat muscular strain
(b)	Radio waves	(ii)	For broadcasting
(c)	X–rays	(iii)	To detect fracture of bones
(d)	Ultraviolet rays	(iv)	Absorbed by the ozone layer of the atmosphere

(i) (ii) (iv) (iii)

(iii) (ii) (i) (iv)

(i) (ii) (iii) (iv)

(iv) (iii) (ii) (i)

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A radar has a power of 1 kW and is operating at a frequency of 10 GHz. It is located on a mountain top of height 500 m. The maximum distance up to which it can detect object located on the surface of the earth(Radius of earth = 6.4 × 10⁶ m) is :

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