Home
Class 12
BIOLOGY
Lens is man is...

Lens is man is

A

biconvex

B

Biconcave

C

Spherical

D

Cylindrical.

Text Solution

AI Generated Solution

The correct Answer is:
### Step-by-Step Solution: 1. **Identify the Lens in the Eye**: The lens is a crucial component of the eye, which is a sense organ responsible for vision. 2. **Type of Lens**: The lens in humans is classified as a **bi-convex lens**. This means that it is curved outward on both sides. 3. **Transparency**: The lens is transparent, which is essential for allowing light to pass through it and reach the retina. 4. **Division of Eye Chambers**: The lens divides the eye into two chambers: the **aqueous chamber** (anterior) and the **vitreous chamber** (posterior). This separation is important for maintaining the structure of the eye and for proper light refraction. 5. **Elasticity and Shape Change**: The lens is an elastic structure, which allows it to change shape. This ability to change shape is crucial for focusing light on the retina, especially when viewing objects at varying distances. 6. **Composition of the Lens**: The lens is made up of: - **Epithelial cells**: These form the outer layer of the lens. - **Clear cytoplasm**: This is present in the form of fibers, which help in light refraction. - **Intercellular proteins**: These proteins contribute to the lens's structure and function. 7. **Focus Mechanism**: The lens adjusts its shape to focus light accurately on the retina, allowing for clear vision of objects at different distances. 8. **Conclusion**: Based on the above points, the correct answer to the question "Lens in man is" is that it is a **bi-convex lens**.
Promotional Banner

Topper's Solved these Questions

  • SEEDS

    DINESH PUBLICATION ENGLISH|Exercise CHECK YOUR GRASP|10 Videos

  • STEM

    DINESH PUBLICATION ENGLISH|Exercise MULTIPLE CHOICE QUESTIONS|134 Videos

Similar Questions

Explore conceptually related problems

The distance between an object and a divergent lens is m times the focal length of the lens. The linear magnification produced by the lens is

Assertion: In displacement method of finding focal length of a convex lens its magnification in one position of lens is +2, then magnification in another position of lens should be -1/2. Reason:This method can't be applied for a concave lens.

AB is the optic axis of a lens. Lens is not shown in the figure. O and I are the position of object and image. Then match of following.

An object to the left of a lens is imaged by the lens on a screen 30cm to the right of the lens. When the lens is moved 5cm to the right, the screen must be moved 5cm to the left to refocus the images. The focal length of lens is :-

A convex lens forms an image of an object on a screen 30 cm from the lens. When the lens is moved 90 cm towards the object, then the image is again formed on the screen. Then, the focal length of the lens is

A symmetric double convex lens is cut in two equal parts by a plane perpendicular to the principal axis. If the power of the original lens was 4D, the power of a cut lens will be

Lens is held in position by ....................... .

The shape of eye lens is changed by

Eye lens is held in the place by

Assertion:A convex lens and a concave lens are kept in contact. They will behave as a diverging lens if focal length of convex lens is more. Reason: Power of a concave lens is always less than the power of a convex lens, as power of concave lens is negative whereas power of convex lens is positive.