LENS PART B

A thini, symmetric double convex lens of power P is cut into three parts A, B, and C as shown in Figure. The power of

The lens A has a focal length of 25 cm whereas another lens B has a focal length of 60 cm. Giving reason state, which lens has more power: A or B.

A beam of light converges at a point P. Now a convex lens is placed in the part of the converngent beam at 15 cm from P. At what point does a beam converge if the convex lens has a focad length 10 cm ?

An image B is formed of a real point object A by a lens whose optic axis is XY. (a) Draw a ray diagram to locate the lens and its focus point. (b) If A and B are separated by 20 cm along the axis, find the focal length of the lens.

Cutting OF Lens|| Shifting OF Parts OF Lens|| Displacement Method

Thin lens (Part-1) |Types of thin lens|Nature of lens|Lens displacememt method

A convex lens of focal length f cut into parts first horizontally and then vertically. Find the focal length of part A of the lens, as shown:

a) A small object is placed 150 mm away from a diverging lens of focal length 100 mm. i) Copy the figure below and draw rays to show how an image is formed by the lens. ii) Calculate the distance of the image from the lens by using the lens formula. b) The diverging lens in part a) is replaced by a converging lens also of focal length 100 nm. The object remains in the same position and an image is formed by the converging lens. Compare two properties of this image with those of the image formed by the diverring lens in part a)

Lens -Classification||Behaviour OF Lens in Different Medium||General Method to Solve Problem OF Lens|| Discussion OF Sheet- Section-2 (part-4 Q.12 to 23)