Question

A Concave mirror forms the image of same size when object is placed​

Answer 1

Answer:

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Explanation:

A concave mirror forms the image of the same size when the object is placed either at x metres or y metres from the pole of the mirror.

Answer 2

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A Concave mirror forms the image of same size when object is placed

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Since, the image produced is real and of same size as that of object .so, the magnification produced will be -1

Let the object be placed at a distance u

m= -v/u

-1= -v/-u

v= -u

So, from mirror formula-

1/f= 1/v+ 1/u

1/f=-1/u+ 1/u

1/f= 0

f= infinity

As the image is of the same size as of the object .So, the object should be placed at centre of curvature that is at 2f

So, the object must be placed at infinity.

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