MTS 21 07-07-2022 Shift 1


Question 1

If ‘u’ is the object-distance, ‘v’ is the image-distance and ‘f’ is the focal length of a spherical mirror then which of the following is a correct expression for the mirror formula?
यदि 'u' वस्तु-दूरी है, 'v' प्रतिबिम्ब-दूरी है और 'f' गोलीय दर्पण की फोकल लम्बाई है, तो दर्पण सूत्र के लिए निम्नलिखित में से कौन सा सही व्यंजक है?

Options

A

1/v + 1/u = 1/f

1/v + 1/u = 1/f

B

1/v + 1/u = –1/f

1/v + 1/u = –1/f

C

1/v – 1/u = 1/f

1/v – 1/u = 1/f

D

1/v – 1/u = –1/f

1/v – 1/u = –1/f


Solution:

Correct Answer:

A

1/v + 1/u = 1/f

1/v + 1/u = 1/f


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