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Giving Reasons, State the 'Signs' (Positive Or Negative) Which Can Be Given to the Following: (A) Object Distance (U) for a Concave Mirror Or Convex Mirror (B) Image Distance (V) for a Concave Mirror (C) Image Distance (V) for a Convex Mirror - Science

Giving reasons, state the 'signs' (positive or negative) which can be given to the following:

(a) object distance (u) for a concave mirror or convex mirror
(b) image distance (v) for a concave mirror
(c) image distance (v) for a convex mirror

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Solution

(a) Object distance (u) for a concave or convex mirror is given a negative sign. This is because, the object is always placed to the left of the mirror.
(b)

  1. The image distance (v) for a concave mirror is given a positive sign if the image formed is behind the mirror and to the right of it.
  2. The image distance (v) for a concave mirror is given a negative sign if the image formed is in front of the mirror and to the left of it.

(c) The image distance (v) for a convex mirror is always given a positive sign because the image is always formed behind the mirror and to the right of it.

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APPEARS IN

Lakhmir Singh Class 10 Physics (Science)
Chapter 4 Reflection of Light
Q 8 | Page 193
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