Question

An object is placed at a distance of 10cm from a convex mirror of focal length 15cm. Find the position and nature of image?​

Answer 1

Answer:

Explanation:

u = - 10cm

f = - 15cm

1/f = 1/v + 1/u

⇒ 1/-15 = 1/v + 1/-10

⇒ 1/-15 - 1/-10 = 1/v

⇒ 1/v = ( 2 - 3)/ -30 = 1/ 30

⇒ v = 30cm

Location of image:- behind mirror

Nature of image:- Virtual and erect

Answer 2

Given:

• u = -10 cm
• f = 15 cm

To Find:

• Position and nature of the image

Solution:

Applying mirror formula:

➠ 1/v + 1/u = 1/f

➠ 1/v + 1/-10 = 1/15

➠ 1/v = 1/15 + 1/10

➠ 10 + 15/150 = 25/100

➠ v = 150/25 = 6cm

• Thus, the image is at the distance of 6cm from the pole.

• The image is formed behind the mirror.

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