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Q. When held In front of a mirror, Arun’s watch shows the time as 7:12. Find the right time in the watch?

Q. दर्पण के सामने रखने पर अरुण की घड़ी में समय 7:12 मिनट दिखता है। वास्तविक समय ज्ञात करें:

A
4:48
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B
3:32
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C
4: 58
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D
5: 32
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Solution

The correct option is A 4:48
The time shown in the clock should be subtracted from 12 o’ clock to get the reqd. Time.
(Because a plane mirror produces a virtual image where left appears right and vice versa) Reqd. time =(11:60)(7:12)=4:48

अपेक्षित समय प्राप्त करने हेतु घड़ी में दिखाए गए समय को 12 बजे से घटाया जाना चाहिए।
(क्योंकि एक समतल दर्पण एक आभासी प्रतिबिम्ब बनाता है ,जहाँ बायाँ दाएँ की तरफ दिखाई देता है और दायाँ बाएँ की तरफ दिखाई देता है)
अपेक्षित समय =(11:60)(7:12)=4:48

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