Question

Pleasd help me with this aldo

Answer 1

Answer:

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Explanation:

1. The 2 kinds of reflections are:1) Regular reflections 2) Irregular reflections
2. The extent of accommodation in eye is 25cm
3. The 2 uses of plane mirror are: 1) To reflect light Or lasers 2) For daily uses like shaving mirror etc.
4. The virtual image is formed always behind the mirror.

Sorry that I didn't answer the role of Iris 'cause I didn't know it

Answer 2

(1)the two kinds of reflections are

• specular reflection
• diffuse reflection

(2) ability of the eye lens to adjust its focal length.

(3)Iris: coloured diaphragm between the cornea and the lens that controls size of pupil.

(4)Uses of a plane mirror :-

1)In a periscope it is used as a device that enables us to see objects kept at different levels. Periscopes are used in submarines.

2)In a kaleidoscope which is a kind of toy it produces colourful patterns of images from pieces of glass beads and so on.

3)In a solar cooker it is used to reflect light.

(5) a virtual image is an image formed when the outgoing rays from an object always diverge (move apart).

A plane mirror forms a virtual image positioned behind the mirror.

Light from the source only exists in front of the mirror.

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