Question

PIO कार्ड किस वर्ष लांच किए गए?
A. 1995
B. 1997
C. 1999
D. 2002

Answer 1

your answer is -- " B" ....
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Answer 2

Answer:

b is right

Explanation:

Lens formula Negative

If the lens equation yields a negative image distance, then the image is a virtual image on the same side of the lens as the object. If it yields a negative focal length, then the lens is a diverging lens rather than the converging lens in the illustration.