Light Reflectio...

What is known as linear magnification of spherical mirrors?

A real image is

$$\dfrac {\sin i}{\sin r} = ......$$

A ray of light travels from a denser to a rarer medium then, the ray :

The height of the image formed by an object of height $$10 cm$$ placed in front of a plane mirror is ________.

When a ray of light travels from air to glass slab and strikes the surface of separation at $$90^o$$, then it ....... .

A square wire of side $$3.0 cm$$ is placed $$25 cm$$ in front of a concave mirror of focal length $$10  cm$$, with its centre on the axis of the mirror and its plane normal to the axis. The area enclosed by the image of the wire is :

A needle of length $$5\ cm$$, placed $$45 cm$$ from a lens, forms an image on a screen placed $$90\ cm$$ on the other side of the lens. The type of lens and its focal length is:

If a spherical mirror is immersed in a liquid, its focal length will:

A convex lens of focal length $$15\ cm$$ produces a virtual image at a distance of $$30\ cm$$ from the lens. The object distance is: