Question

10. A truck uses a convex mirror as view finder whose radius of curvature is 2.0 m. A maruti car is coming behind the truck at a distance of 10 m. What will be the position of the image of the car and size of the image of the car when observed by the driver of the truck through the convex mirror? (3) virtual​

Answer 1

The image is placed at position 10/11 and the size of the image is 10/11 m

Given data:

Radius(R)=2 m

Focal length(f) = R/2= 1 m

Applying lens mirror formula

$1/v+1/u=1/f$

1/v - 1/10 = 1/1

1/v= 1+1/10 = 11/10

v = 10/11 m

Position of the image will be 10/11 m in the mirror

Magnification(M) = v/u = (10/11) / (-10) = -1/11

Size of image= M*u = -10 x (-1/11) = 10/11 m

Thus the image is placed at position 10/11 and the size of the image is 10/11 m.

Also learn more

The focal length of a lens is 10 cm. An object is placed in front of the lens at a distance 5 cm. Write down the nature and size of the image formed.

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