The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is
[Kerala PET 2005]

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Solution

The correct option is B

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The focal length of a concave mirror is f and the distance from the object to the principal focus is x. The ratio of the size of the image to the size of the object is

Q. The focal length of a concave mirror is f and the distance from the object to the principal focus is p. The ratio of the size of the real image to the size of the object is:

The focal length of a concave mirror is f.If an object is placed at a distance x from the principal focus away from the mirror,what is the ratio of the size of the image to the size of the object?(3m)

Q. Assertion :The focal length of the concave mirror is

f

and distance of the object from the focus is

u

. The magnification of the image will be

f / u

Reason: Magnification=

\frac{s i z e o f o b j e c t}{s i z e o f i m a g e}

At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to size of the object.

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The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is [Kerala PET 2005]

The correct option is B

The focal length of a concave mirror is f and the distance from the object to the principle focus is x. The ratio of the size of the image to the size of the object is
[Kerala PET 2005]