Question

An object is placed at a distance of 10 cm from a convex mirror of focal length 15 cm. find












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Answer 1

Answer:

Given that

u= -10 cm

f= 15 cm

We need to find v

We know the formula

1/f = 1/v + 1/u

Therefore, 1/v= 1/f – 1/u

Substituting the known values in the above equation we get,

1/v= 1/15 + 1/10

1/v = (2+3)/30 (lcm)

Hencev=5/30 = 6 cm

v= 6cm

Nature of the image: The image is formed behind the mirror and it is virtual and erect.

Answer 2

Answer:

Given that

u=10cm

f=15cm

we need to find v

we know the formula

1/f = 1/v+1/u

Therefore,1/v = 1/15+1/10

substituting the known values in the above equation we get,

1/v =(2+3)/30(lcm)

Hence v= 5/30=6cm

v=6cm

Nature of the image:The image is formed behind the mirror and it is virtual and erect.