Question
Serious draw back of the semiconductor device is (a) They cannot be used with high voltage (b) They pollute the environment (c) They are costly(d) They do not last for long time
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| List I (Position of the object) |
List II (Magnification) |
| (I) An object is placed at focus before a convex mirror | (A) Magnification is -∞ |
| (II) An object is placed at centre of curvature before a concave mirror | (B) Magnification is 0.5 |
| (III) An object is placed at focus before a concave mirror | (C) Magnification is +1 |
| (IV) An object is placed at centre of curvature before a convex mirror | (D) Magnification is -1 |
| (E) Magnification is 0.33 |