Question

The magnification produced by three mirrors A,B,C are +1 ,+5, +0.45 respectively . Based on the magnification identify the mirrors . Which mirror is used as the dentist mirror ?

Answer 1

Mirror A is a plane mirror  as same size erect image is formed .

Mirror B  is a concave mirror as enlarged image is formed .

Mirror C  is a convex  mirror as diminished and erect imaged is formed.

A  concave mirror is used as the dentist mirror because it produces an          enlarged image when an object is kept close  .

Answer 2

Tip:

+ve magnification means the image formed is virtual and erect. Mag more that 1 implies the image size is more than that of the object and less than 1 implies the opposite. And, dentist use concave mirror to see magnified image of teeth of patient.

Answer:

• Mirror 1 = Plane mirror.
• Mirror 2 = Concave mirror (Obj b/w F and O.)
• Mirror 3 = Convex mirror

So, mirror 2 can be used as a dentist mirror.

More:

Use of concave mirror:

• Used in solar furnaces
• Dentist mirror.
• Headlight in vehicles, torches, etc to get parallel beams of light.
• Shaving mirror.
• Used in opthamaloscope.

Use of convex mirror:

• For security purposes. (See attachment.)
• Used in vehicles.

Use of plane mirror:

• Used in solar cookers.
• Used in kaleidoscope.
• Used by scouts for signalling.
• Dressing mirror.