A convergent beam of light passes through a diverging lens of focal length `0.2m` and comes to focus at a distance of `0.3m` behind the lens. Find the position of the point at which the beam would converge in the absence of the lens.

A convergent beam of light passes through a diverging lens of focal length 0.2 m and comes to focus at a distance of 0.3 m behind the lens. Find the position of the point at which the beam would converge in the absence of the lens.

If a convergent beam of light passes through a diverging lens, the result

If a convergent beam of light passes through a diverging lens, the result

Convergent beam of light is passed through a diverging lens. Light rays after passing lens

A converging beam of light is incident on a concave lens of focal length 20 cm. In the absence of the lens, the beam converges at a point 10 m behind the lens. Find where the beam will converge/diverge after refraction.

A diverging lens has a focal length of 0.10 m. The power of this lens will be:

A converging lens of focal length 5.0cm is placed in contact with a diverging lens of focal length 10.0cm. Find the combined focal length of the system.

A horizontal parallel beam of light passes though a vertical convex lens of focal length 40 cm. Behind the lens there is a plane mirror making an angle theta with the principal axis of the lens. The mirror intersects the principal axis at M. Distance between the optical centre of the lens and point M is OM = 20 cm . The light beam reflected by the mirror converges at a point P. Distance OP is 20 cm. Find theta .