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Solution


Q.

An unpolarised light beam strikes a glass surface at Brewster’s angle. Then                [2024]
1 the reflected light will be partially polarised.  
2 the refracted light will be completely polarised.  
3 both the reflected and refracted light will be completely polarised.  
4 the reflected light will be completely polarised but the refracted light will be partially polarised.  

Ans.

(4)

According to Brewster’s law, when an unpolarised light beam strikes a glass surface at Brewster’s angle, then the reflected light is completely polarised and the refracted light will be partially polarised.