A convex mirror is on the exterior of thepassenger side of many trucks. If the f

Question

A convex mirror is on the exterior of thepassenger side of many trucks. If the focal length of such a mirroris - 40.0 {cm}. what will be the location of the image of acar that is 2.0 m high and 150 m behind the truck mirror? d_{i_1} = cm what will be the height of the image of a carthat is 2.0 m high and 150 m behind the truck mirror? h_{i_1} = cm what will be the location of the image of acar that is 2.0 m high and 12.5 m behind the truck mirror? d_{i_2} = cm what will be the height of the image of a carthat is 2.0 m high and 12.5 m behind the truck mirror? h_{i_2} = cm

Explanation / Answer

Given, f = -0.4; u = 150 m; h1 = 2.0 m

1/v + 1/u = 1/f

1/v = -1/0.4 - 1/150

= -2.506

Image distance, v = -0.3989 m

Now h2/h1 = v/u

h2 = h1.v/u

= 2.0x0.3989/150

= 0.005 m

(b) Procede as above, with u = 2 m; h1 = 12.5 m

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