1.

5cm high object is placed at a distance of 25 cm from a converging lens of focal length of 10 cm. Determine the position, size and type of the image.

Answer»

Solution :Given: `h_(1) = 5 CM`
U = 25 cm
f = 10 cm
(Converging LENS)
To find: Position, size and type of image
Solution :`1/V - 1/u = 1/f `
`1/v - 1/-25 =1/10`
`1/v + 1/25 = 1/10`
= `1/10 - 1/25`
`(1/Y)/V = (5-2)/(50)`
`1/v = 3/50`
v = `50/3 `
`therefore`V = 16.7 cm
`v/u = (h_(2))/(h_(1))`
`(50/3)/25= (h_(2))/5`
`50/3 xx 5/25 = h_2`


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