Question

2. An object is placed at a distance of 15 cm from a convex lens of focal length 10 cm. The
image obtained on the screen is
(a) upright and magnified
(b) inverted and magnified
(c) inverted and diminished
(d) upright and diminished
​

Answer 1

Required Answer :-

• Object distance = 15 cm
• Focal length = 10 cm

According to lens formula

1/u + 1/v = 1/f

1/15 + 1/v = 1/10

1/v = 1/10 - 1/15

1/v = 3 - 2/30

1/v = 1/30

v = 30 cm

So,

The image is real and inverted.