Transparent object and translucent object

An object may have

An object may have

The inertia of an object tends to cause the object

An illuminated object

Find the apparent depth of object of the object seen by observe A (in the figure shown)

A luminous object

A point object O is placed in fornt of a transparent slab at a distance x from its surface. It is seenfrom the other side of he slab by light incident nearlyl normally to the slab. The thickness of the slab is t and its refractive index is mu . Show that the apparent shift in the position of the object is independent of x and find its value.

An object of mass m is moving with a constant velocity upsilon How much work should be done on the object in order to bring the object to rest ?

A point object is placed on the axis in front of a convex lens of focal length 30 cm. The distance of the object from the lens is 45 cm. If the lens is moved away from object by 1 mm and also the object is moved apart from the line joining the object and optical centre by 1 mm the displacement of the image has magnitude-

A concave mirror forms a real image three times larger than the object on a screen. The object and screen are moved until the image becomes twice the size of the object. If the shift of the object is 6cm, find the shift of screen.