Page 2 - HA-sign convention rules of spherical mirror

(c) real, inverted and enlarged
(d) virtual, upright and enlarged

Subjective Questions:

1. (a) Write two rules of the new Cartesian sign conventions for spherical
mirrors.
(b) Trace the path of the reflected ray by drawing a figure if it passes from
centre of curvature of a concave mirror.
2. 4.5 cm needle is placed 12 cm away from a convex mirror of focal length
15 cm. Give the location of image and magnification. Describe what
happens to the image as the needle is moved farther from the mirror.
3. Rohit placed a pencil perpendicular to principal axis in front of a
converging mirror of focal length 30 cm. The image formed is twice the
size of the pencil. Calculate the distance of the object from the mirror.
4. If the image formed by mirror for all positions of the object placed in front
of it is always virtual and diminished, state the type of the mirror. Draw a
ray diagram in support of your answer. Where are such mirrors
commonly used and why?
5. Define magnification produced by a spherical mirror in terms of height of
a object and image. How is it related to object and image distance?
Explain why magnification is positive for virtual image and negative for
real image?
6. An object is placed at a distance of 25 cm away from a converging mirror
of focal length 20 cm. Discus the effect on the nature and position of the
image if the position of the object changes from 25 cm to 15 cm. Justify
your answer without using mirror formula.
7. Write one similarity and one dissimilarity between image formed by pane
mirror and convex mirror.