For a concave mirror, when the object is at focus, the size of the image formed is:

1. magnified
2. highly magnified
3. diminished
4. of the same size

The image formed by a convex mirror is:

1. erect and diminished
2. erect and enlarged
3. inverted and diminished
4. inverted and enlarged

The wrong rule of sign convention is :

(i) All distances are measured from the centre of curvature of the mirror taken as origin.

(ii) The distances measured along the principal axis in the direction of incident light are positive.

(iii) The distances above the principal axis are taken positive.

1. (i)
2. (ii)
3. (iii)
4. both (i) and (ii)

For a convex mirror, the value of u is always …………… and the value of v is ……………

1. positive, positive
2. positive, negative
3. negative, negative
4. negative, positive