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Find magnification for lens.Given [ f=25...

Find magnification for lens.Given [ f=25 CM ]

A

a. 2

B

b. 5

C

c. 7

D

d. 12

Text Solution

Verified by Experts

The correct Answer is:
B
`u=-20`
`F=25`
`(1)/(v)-(1)/(20)=(1)/(25)`
`(1)/(v)=(1)/(25)-(1)/(20)=(4-5)/(100)`
`V=-100`
`M=(v)/(u)=(-100)/(-20)=5`
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