Question

collect photographs from your daily life where you use convex and concave mirrors and display in your class room. ​

Answer 1

Answer:

Some concave mirror uses are listed in the points below.

Shaving mirrors

Head mirrors

Ophthalmoscope

Astronomical telescopes

Headlights

Solar furnaces

Concave mirrors reflect light inward to one focal light. Therefore, they are mostly used to focus light. A concave mirror shows different image types depending on the distance between the mirror and the object. Concave mirrors are called converging mirrors because as light falls on the mirror, it collects the light and refocuses the parallel incoming rays. Some of the most important and common applications of the concave mirror are described below.

Used in shaving mirrors

Concave mirrors are most commonly used in shaving because of their reflective and curved surface. During shaving, the concave mirror forms an enlarged and erect image of the face when the mirror is held closer to the face.

Concave mirror uses in the ophthalmoscope

Concave mirrors are used in optical instruments such as Ophthalmoscope. Ophthalmoscope consists of a concave mirror with a hole in the center. The doctor focuses through the small hole from behind the concave mirror while a light beam is directed into the pupil of the patient’s eye. This makes the retina visible and makes it easy for doctors to check.

Uses of concave mirror in astronomical telescopes

Concave mirrors are also used in making astronomical telescopes. In an astronomical telescope, a concave mirror of a diameter of 5 meters or more is used as the objective.

Concave mirrors used in headlights

Concave mirrors are widely used in headlights of automobiles and motor vehicles, torchlights, railway engines, etc. as reflectors. The light source is placed at the focus of the mirror, so after reflecting the light rays travel over a huge distance as parallel light beams of high intensity.

Used in solar furnaces

Large concave mirrors are used to focus sunlight to produce heat in the solar furnace. They are also used in solar ovens to collect a large amount of solar energy in the focus of the concave mirror for heating, cooking, melting metals, etc.

These were some common uses of the concave mirror in daily life. Concave mirrors are also used in satellite dishes, electronic microscope, visual bomb detectors, etc. Stay tuned with BYJU’S to learn more interesting physics concepts like a convex mirror, laws of motion, etc. with the help of interactive video lessons.

Answer 2

Convex and concave mirrors are spherical mirrors.

Explanation:

Concave mirror:

• It is a spherical mirror called converging mirror whose aperture is a cut out part of a sphere which has its outer surface polished.
• The reflecting surface is its inner surface.
• These mirrors converge light at a focal point after reflection.
• Images formed can be real or virtual and small or magnified.

Applications:

In torch for reflecting light, in shaving to get an erect and enlarged image of the face, in front light of car, in solar furnace and solar ovens, used in flashlight of camera mirror.

Convex mirror:

• It is a spherical mirror called diverging mirror whose aperture is a cut out part of a sphere which has its inner surface polished.
• The reflecting surface is its outer surface.
• These mirrors diverge light at a focal point after reflection.
• It forms virtual, erect and diminished images.

Applications:

In side-view mirror on the passenger’s side of a car for getting smaller images of vehicles behind, for convenient shop and big supermarket and any other corner where need anti-thief,  in making lenses of sunglasses, they are used in the magnifying glass.