Question

An object is placed 50 cm from a converging lens of focal length 30 cm . The image produced would be​

Answer 1

Answer:

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Answer 2

Given:

An object is placed 50 cm from a converging lens of focal length 30 cm .

To find:

Image distance and image characteristic ?

Calculation:

Applying Len's Formula:

$\dfrac{1}{f} = \dfrac{1}{v} - \dfrac{1}{u}$

$\implies \dfrac{1}{30} = \dfrac{1}{v} - \dfrac{1}{( - 50)}$

$\implies \dfrac{1}{30} = \dfrac{1}{v} + \dfrac{1}{ 50}$

$\implies \dfrac{1}{v} = \dfrac{1}{30} - \dfrac{1}{50}$

$\implies \dfrac{1}{v} = \dfrac{5 - 3}{150}$

$\implies \dfrac{1}{v} = \dfrac{2}{150}$

$\implies v = 75 \: cm$

• Image distance is 75 cm.

Image will be real, inverted and magnified