Q1. a)-Explain the difference between a plane mirror, a concave mirror and a convex mirror with respect to the type and size of the images produced. b)-Describe the positions of the source of light with respect to a concave mirror in
1.Torch light 2.Projector lamp 3.Floodlight
c)-why are the mirror fitted on the outside of cars convex?
d)-why does obtaining the image of the sun on a paper with the help of a concave mirror burn the paper?

Q2.What sign convention are used for reflection from a spherical mirror?
NEED FULL EXPLANATION. OR ALSE ANSWER WILL BE REPORTED.
NO NONSENSE ANSWER OR ALSE ANSWER WILL BE REPORTED.

a)Plane mirror produce virtual ,errect and enlarge image. concave mirrors produce real , inverted and small image. convex mirrors produce virtual ,errect and diminished images .

b)In torches, the source of light is placed at the focus of the concave mirror to obtain a parallel beam of light. In projector lamps, the source of light is placed at the centre of curvature of the concave mirror. In floodlights, the source of light is placed just beyond the centre of curvature of the concave mirror.

c)Convex mirrors are used as side mirrors of vehicles because convex mirrors show larger images smaller. The image of any object is made straight and small by a convex mirror

d)The rays from the Sun are parallel. When these rays fall on the concave mirror, they are converged to a single point on the focal plane of the mirror. ... Now, if a paper is placed at that point to get the image of the Sun, the paper gets burnt because of huge amount of heat concentrated at that point.

0.11 m/s and 0.28 m/s should be correct

well clustered together.

points close on a scatter diagram