Question

Example 1.1
A convex mirror used for rear-view on an automobile has a radius of curvature of
3.00m. If a bus is located 5.00m from this mirror, find the position, nature and size of the
image​

Answer 1

Answer:

given :

R = 3m

R = 3mf = R / 2 = 3 / 2 = 1.5m

R = 3mf = R / 2 = 3 / 2 = 1.5mu = 5m

R = 3mf = R / 2 = 3 / 2 = 1.5mu = 5mv = ?

Mirror formula:

1 / f = 1 / u + 1 / v

by sign conventions:

1 / 1.5 = 1 / -5 + 1 / v

1 / 1.5 = 1 / -5 + 1 / v1 / v = 1 / 1.5 + 1/5⇒6.5 / 7.5

1 / 1.5 = 1 / -5 + 1 / v1 / v = 1 / 1.5 + 1/5⇒6.5 / 7.5v = 7.5 / 6.5

= 1.15m

∴The image is virtual seen at the back of mirror.

m = hi / ho = -v / u

-1.15 / -5 = 0.23

∴Image is erect and diminished in size by a factor of 0.23.

hope it helps you mate.

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@ ANUSHA ❤✌

Answer 2

Answer:

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