A lens shown in the figure 28.72 made of two different materials. A point object is placed on the axis. How many images of the object will the lens form

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Solution

The correct option is B 2
The 2 different material will have 2 different refractive index.

The focal length is a function of refractive index given by $\frac{1}{f} = (μ_{r e l} - 1) (\frac{1}{R_{1}} - \frac{1}{R_{2}})$

Two different focal length means two different v for same u
Hence 2 images will be formed.

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A lens shown in the figure 28.72 made of two different materials. A point object is placed on the axis. How many images of the object will the lens form

The correct option is B 2The 2 different material will have 2 different refractive index. The focal length is a function of refractive index given by 1f=(μrel−1)(1R1−1R2)Two different focal length means two different v for same uHence 2 images will be formed.