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Class 10 > Learn Class IX-X Tuition > Why concave mirror is used in shaving mirrors?
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Why concave mirror is used in shaving mirrors?

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There are three basic types of mirrors - the flat, the convex and the concave mirrors. The flat one is the one that we use to look at ourselves, in our homes etc. Imagine a large bowl as a mirror. Now we can assume that the outer curved portion of the bowl acts as a convex mirror and the inner portion...
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There are three basic types of mirrors - the flat, the convex and the concave mirrors.

The flat one is the one that we use to look at ourselves, in our homes etc. Imagine a large bowl as a mirror. Now we can assume that the outer curved portion of the bowl acts as a convex mirror and the inner portion of the bowl as a concave mirror. If you stand between the focal point and the pole of the mirror, then the nature of the image formed is virtual, erect and magnified.

 

These kinds of mirrors are a little thicker, and they bend light towards you. When you move towards the centre of the mirror, the object appears enlarged, and when you move further away from the centre, you'll notice a diminished image.

 

A person who is shaving keeps his face closer to the centre of the mirror, that is between the pole and the focal point. Hence, it appears enlarged. This is the reason why concave mirrors are used as shaving and makeup mirrors. 

 

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Physics Subject Expert

When you look into a concave mirror keeping your face close to the mirror you can see an enlarged and erected image of your face. This will make it easy to shave by seeing hair closely and clearly. This happens because when the object is kept at a distance less than the focal length of the concave...
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When you look into a concave mirror keeping your face close to the mirror you can see an enlarged and erected image of your face. This will make it easy to shave by seeing hair closely and clearly. This happens because when the object is kept at a distance less than the focal length of the concave mirror the image formed will be virtual, erect and enlarged. The position of the image formed will be behind the mirror, ie we can see it inside the mirror and all other imnages are formed in front of the mirror. read less
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Excellence Award Winner ( 7 times )

Concave mirrors are used by dentists because at a short range (object distances less than the focal length) they produce magnified, upright images. It is useful to have a magnified image of a tooth when you're looking for or repairing cavities, cracks, or other abnormalities. ... Shaving mirrors.
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Simplified Maths and Science

Simply because it gives an enlarged image, so that the person can shave carefully to perfection.
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PM Classes

few practical reasons- 1- to get large surface area (face) on a small surface area (concave mirror) 2- more clear face on mirror
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Experienced Mathematics com ECE Educator

People use concave mirror because when a man stands between the principal focus and pole of a concave mirror,he sees an enlarged,erect and virtual image of his face.this is the reason why a concave mirror of large focal length is used for shaving. One another example is it is used in in car wing mirror...
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People use concave mirror because when a man stands between the principal focus and pole of a concave mirror,he sees an enlarged,erect and virtual image of his face.this is the reason why a concave mirror of large focal length is used for shaving. One another example is it is used in in car wing mirror so that the driver can see far behind. read less
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Tutor

It is used in car wing mirror so that the driver can se far behind. Some people use concave mirror because when a man stands between the principal focus and pole of a concave mirror,he sees an enlarged,erect and virtual image of his face.this is the reason why a concave mirror of large focal length is...
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It is used in car wing mirror so that the driver can se far behind. Some people use concave mirror because when a man stands between the principal focus and pole of a concave mirror,he sees an enlarged,erect and virtual image of his face.this is the reason why a concave mirror of large focal length is used for shaving. read less
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Concave mirrors concentrate on one focus and while shaving it concentrate on a point and the image is enlarge which prevents the face from cutting. For concave mirrors,when the object is nearer (i.e. between focal point and mirror),the image is upright and magnified. For shaving,mirror is generally held...
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Concave mirrors concentrate on one focus and while shaving it concentrate on a point and the image is enlarge which prevents the face from cutting. For concave mirrors,when the object is nearer (i.e. between focal point and mirror),the image is upright and magnified. For shaving,mirror is generally held near the face. So the face comes between the focal point and the mirror due to which magnified image is formed which helps in making a smooth shave. read less
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Math tutor, Computer processor

because when the face is held within the focus of a concave mirror, then an enlarged image of the face is seen in the concave mirror. This helps in making a smooth shave
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Trainer

Concave has a unique property that whenever the object having distance less then the focal length it produces virtual,erect and enlarged image which is very useful when u are doing shaving each hair should be removed. That's why concave mirror is used in shaving.
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