Question

Radius of curvature of convex mirror is 40 cm be the image formed on the object placed 30 cm from the mirror

Answer 1

Answer :

Given -

• Radius of curvature = 40 cm
• Convex mirror
• Object Distance = - 30 cm

To Find -

• Image Distance ?

Solution -

Focal length is half of the radius of curvature.

So, the focal length is 20 cm.

Now, Mirror Formula : 1/v + 1/u = 1/f.

So, 1/v + 1/-30 = 1/20

⇒ 1/v = 1/20 + 1/30

⇒ 1/v = (30 + 20)/600

⇒ 1/v = 50/600

⇒ 1/v = 5/60

⇒ 1/v = 1/12

⇒ v = 12 cm

Hence, The Image Distance = 12 cm.