Question

d)
is
There is a point object and a plane mirror. If the mirror is moved by 10 cm away from the object, find the
distance which the image will move.
[ ]
b) 10 cm
c) 30 cm
d) zero
a) 20 cm​

Answer 1

The distance moved by the image is 20 cm.

Explanation:

We know that

Xim = −Xom

or Xi−Xm = Xm − X0

or Δxi − Δxm = Δxm − Δx0

Here Δx0=0

• Now the distance moved by the mirror:

Δxm = 10 cm

Δx=2Δxm − Δx0 = 20 cm

Thus the distance moved by the image is 20 cm.

Also learn more

Focal length of concave mirror is f .if an object is placed distance x from the principal focus and away from mirror .what would be the magnification of image.for what value of x the size of image will equal to object​ ?

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