For what position of an object, a concave mrror forms
a real image of equal size to the object?

A concave mirror forms image inverted and equal in size, when object is placed at…… .

Where should an object be placed in front of a convex lens to get a real image of the size of the object?

A plano convex lens of refractive index 1.5 and radius of curvature 30cm. Is silvered at the curved surface. Now this lens has been used to form the image of an object. At what distance from this lens an object be placed in order to have a real image of size of the object.

Draw a ray diagram to show image formation when the concave mirror produces a real, inverted and magnified image of the object.

A lens placed at a distance of 20 cm from an object produces a virtual image 2//3 the size of the object.Find the position of image,kind of lens and its focal length.

A lens placed at a distance of 20 cm from an object produces a virtual image 2//3 the size of the object. Find the position of the image, kind of the lens and its focal length.

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.

Show that a concave lens will always form a virtual image of a real object.