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RRB Non Technical Model Papers 6 with solutions
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Question : 48
Total: 100
Which of the following does not use concave mirrors?
Solar heater
Flash light
Rear-view mirror in car
Dentist
Validate
Solution:
(2) Rear-view mirror uses convex mirror so as to get a virtual and erect image of the vehicles coming behind. So, they don’t use concave mirrors. All the rest-reflectors in solar heaters, flash lights and dentists-use concave mirrors.
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