Question

1. Define magnification. If m is +0.5, Find the type of mirror and nature of image.
A convex mirror with a radius of curvature of 3 m is used as rear view mirror for a
vehicle.

Answer 1

Explanation:

R=+3m⇒f=

2

+3

m

U=−5m

By Mirror formula:

v

1

+

u

1

=

f

1

⇒

v

1

+

(−5)

1

=

5

2

⇒

v

1

=

3

2

+

3

1

v

1

=

15

13

⇒v=

13

15

≃1.1538m behind the mirror

m=

h

o

h

I

=−(

u

v

)⇒h

I

=(

u

−v

)h

o

h

I

=(

13

15

×

(1.5)

1

)h

o

h

I

=

13

3h

o

ie. diminished & virtual & erect

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