Question

if the magnification produced is -1/5 and the focal length is 15 cm for convex lense . find the position of image and its nature​

Answer 1

Answer:

To observe a convex lens which can produce the complete image of the object whereas half of the lens is covered. Because light coming from the object can be refracted from the other half of the lens. Therefore, the intensity of light will be reduced.

Object size h=+4cm

Object distance u=–20cm

Focal length f=–10cm

Image distance v=?

Image size h

′

=?

we know,

f

1

=

u

1

+

v

1

v

1

=

f

1

−

u

1

v

1

=

20

−1

v=−20

The screen should be placed at 20 cm from the mirror.The image is real.

Also magnification m=-1

So, the image is inverted and enlarged.

solution

Step-by-step explanation:

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