Question

the radius of curvature of a convex mirror used as a rear view mirror in a moving car is '20' m a truck is coming from behind it at a distance of 3.5 metre calculate the a)position b)size of the image relative to the size of truck what will be the nature of the image.​

Answer 1

✠Solution°᭄✠

Radius = 2 m

$\sf f = \frac{R }{2} = 1m$

u = -3.5m

we know that

$\sf(a) \: \: \: \: \: \: \: \frac{1}{v} + \frac{1}{u} = \frac{1}{f}$

$\implies\sf \frac{1}{v} + \frac{1}{( - 3.5)} = \frac{1}{1}$

$\implies\sf \frac{1}{v} = 1 + \frac{1}{3.5} = 1 + \frac{10}{35} = 1 + \frac{2}{7} = \frac{9}{7}$

$\therefore \sf v = \frac{7}{9} = 0.77m$

Answer 2

Answer:

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Explanation:

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