Question

Four lenses a,b,c,d of power +100d,-50d,20d,5d . Which lenses will you use to design a compound microscope for best magnification

Answer 1

Answer:

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Answer 2

Concept:

 lenses is an emissivity optical tool that employs distortion to focus or diffuse a light beam. A compound lens is made up of numerous simple lenses that are often aligned along a single axis, as opposed to a simple lens, which is made up of a single translucent piece. In contrast to a prism, which just refracts light without focusing it, a lens can focus light to create an image. Lenses are also devices that focus or disperse waves and radiation other than visible light, such as explosive lenses, microwave lenses, electron lenses, and acoustic lenses.

Given:

Here the powers of the lenses are $+100d,-50d,20d,5d$.

Find:

We have to tell what should we use to design a compound microscope for best magnification.

Solution:

According to the question,

Compound microscope have two converging lenses so, power of the lenses should be more se we will use the the lenses of power $100d , 20d$.

Hence we should use the power of the lenses having power of $100d,20d$.

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