Question

Name the type of mirror for each of the example and explain why they are used in the following cases:

a) Shaving mirrors

b) Security/Vigilance mirrors in Malls

c) Headlights of cars

d) Mirrors used in Solar cookers

e) Mirrors used at home for combing hair

Answer 1

Answer:

a) Convex mirror

b) Convex mirror

c) Concave mirror

d) Concave mirror

e) Convex mirror

Explanation:

a) Concave mirror gives real and inverted image and inverted image cannot be used for shaving and thus convex mirror is used.

b) Concave mirror gives real and inverted image and inverted image cannot be used for security purpose and thus convex mirror is used.

c) Concave lens is a diverging lens, and it diverges the ray of light to more distance.

d) The rays of lights are concentrated at left side of the mirror and if this type of mirror is used in solar cookers, solar panels, etc. the sunlight will directly concentrate at the solar cells.

e) Concave mirror gives real and inverted image and inverted image cannot be used for combinf hair and thus convex mirror is used.

Answer 2

a) shaving mirror:-

Concave mirrors are used as shaving mirrors when the face is placed close to a concave mirror (within the focus of the mirror) it produces a magnified and erect image of the face.Since an enlarged or magnified image of the face can be seen in the concave mirror, it becomes easier to make a smooth shave.

b) security/vigilance mirror in malls :-

convex mirror is used as security mirrors to provide the ability to literally see around corners which is enormously valuable when your aim is to protect your shop from thieves.

c) headlights of cars :-

concave mirror is used in headlights of a car because it can produce powerful parallel beam of light when the light source is placed at their principal focus

d) mirror in solar cooker:-

Concave mirror is used when one wants to focus the reflected light at one focal point. In a solar cooker, heat energy is required to be focused at one point and at this point the cooking vessel is kept.

e) mirror used at home for combing hair :-

plane mirrors are used because it forms virtual and erect image the image is formed behind the mirror the size of the image is equal to that of the object it helps for combing hair

I hope it is correct