A virtual image of the object is formed by a concave mirror. Which of the following is true if the object distance is denoted by 'u', the image distance is denoted by 'v', and the object height is denoted by 'h'?

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u: negative, v: negative, h: negative

u: negative, v: negative, h: positive

u: positive, v: positive, h: positive

u: negative, v: positive, h: positive

answer is B.

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Detailed Solution

According to the sign convention,

The object is always placed on the left side of the mirror. Therefore object distance(u) is always negative.
A virtual image is formed behind the mirror that is on the right side. Therefore, the image distance will be negative.
Since the object is placed above the principal axis of the mirror, the height(h) of the object is always positive.

Therefore, 'u: negative, v: negative, h: positive' is the correct response.

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