Why should the objective of a microscope...

Why should the objective of a microscope be of small aperture ?

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### Step-by-Step Solution: 1. **Understanding the Microscope Objective**: The objective lens of a microscope is responsible for gathering light from the specimen and forming a magnified image. 2. **Concept of Aperture**: The aperture of a lens refers to the opening through which light enters. A small aperture means that the lens can only gather a limited amount of light. 3. **Light Gathering and Brightness**: When the objective has a small aperture, it allows for better control over the light rays coming from the specimen. This results in a focused and bright image because the light rays converge more effectively. ...

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The focal length of the objective of a microscope is-

Greater than the focal length of eye piece

Lesser than the focal length of the eye piece

Equal to the focal length of the eye piece

Any of (A) (B) and (C)

For compound microscope, f_0=1 cm, f-e=2.5cm . An objects is placed at distance 1.2 cm from objects lens. What should be the length of microscope for normal adjustment?

8.5 cm

8.3 cm

6.5 cm

6.3 cm

The objective of a compound microscope is essentially

A concave lens of small focal length and small aperture

Convex lens of small focal length and large aperture

Convex lens of large focal length and large aperture

Convex lens of small focal length and small aperture