The magnification produced by a spherical mirrror is -3. list four information you can obtain from this statement about the mirror/image.

Define magnification of spherical mirror. What is the magnification produced in a plane mirror?

List four food products are that obtained from animals.

In Fig.2.56 ,the direct image formed by the lens(f=10cm) of an object placed of O and that formed after reflection from the spherical mirror are formed at same point.What is the radius of curvature of the mirror? .

Sketch a graph between frequency of incident radiations and stopping potential for a given photosensitive material. What information can be obtained from the value of the intercept of potential axis? A source of light of frequency of greater than the threshold freuency is placed at a distance of 1 m from the cathode of a photocell? the distnace of hte light sources from the cathode is reduced explain giving reasons, what change will you observe in the Stopping potential.

An object is at a distance of 10 cm from a spherical mirror and the image of the object is at a distance of 30 cm from the mirror on the same side as the object.Is the mirror concave or convex?What is its focal length?

You have learnt in the text how Huygens of reflection and refraction. Use the same principle to deduce directly that a point object placed in front of a plane mirror produces a virtual image whose istance from the mirror is equal to the object distance from the mirror.

If a concave mirror of focal length f produces a real image n times the size of the object,then find the distance of the object from the mirror.

What is a pin-hole camera? How can it be made? How can an image be obtained from it?