A concave mirror forms a real image of the same size as that of the object. Where is the object placed ?

A real image obtained by a concave mirror is 4 times bigger than the object. If the object is displaced by 3 cm away from the mirror, the image size becomes 3 times the object size. Find the focal length of the mirror.

A concave mirror forms an image I corresponding to a point object O . The equation of the circle intercepted by the xy plane on the mirror is

A spherical mirror gives real image 3 times greater than object. If distance between object and image is 100 cm, then its focal length is

A convex lens of focal length f forms an image which is 1/3 times the size of the object. Then, the distance of object from the lends is

A container is filled with water (mu=1.33) upto a height of 33.25 cm . A concave mirror is placed 15cm above the water level and the image of an object placed at the bottom is formed 25 cm below the water level. Focal length of the mirror is

You have learnt in the text how Huygens’ principle leads to the laws 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 distance from the mirror is equal to the object distance from the mirror

An image of an object obtained by a convex mirror is n times smaller than the object. If the focal length of lens is f, the object distance would be ...........

A slab of glass, of thickness 6 cm and refractive index mu =1.5 is placed in front of a concave mirror. If the radius of curvature of the mirror is 40 cm and the reflected image coincides with the object, then the distance of the object from the mirror is