Convex mirrors are used inside the buildings, They are also used in making lenses of sunglasses, They are used in the magnifying glass, They are used in securities and they are used in telescopes.
Concave mirrors are used as searchlights, shaving mirrors, satellite dishes, and many more. These mirrors have the property to collimate and concentrate light rays. Concave mirrors in torches and headlights are used as reflectors.
A concave mirror gives the dentist a magnified reflection of the mouth while also refracting a bit of light. This means the image in the mirror is larger, brighter, and, for the dentist, easier to see.
But concave mirror forms inverted image in all cases except one when object is placed véry close (between pole and focus) to the surface of mirror so obviously it would be véry difficult for driver to see objects (cars) behind which are inverted. Hence we can't use concave mirror as rear view mirror.
The radius of curvature of a spherical mirror is the radius of the circle of which the spherical mirror is a part. It can also be defined as the distance between the centre of curvature of the mirror and the pole of the mirror on the principal axis. The radius of curvature is also a measure of how curved the mirror is.
The advantage of using a convex mirror as a rear-view mirror in vehicles as compared to a plane mirror is that a convex mirror gives a wider field of views as compared to a plane mirror, which enables drivers to view a much larger area of the traffic behind him.
A curved mirror can be of two types depending upon the shape of the bulge, namely Convex – which bulges outwards and Concave – which bulges inward. Concave car mirrors are placed on the side-view mirror of the automobile, whereas, the convex car mirrors are placed on the headlight.
A concave lens is a lens that possesses at least one surface that curves inwards. It is a diverging lens, meaning that it spreads out light rays that have been refracted through it. A concave lens is thinner at its centre than at its edges, and is used to correct short-sightedness (myopia).
Convex mirrors make the object look shorter and wider than it really is. If the mirror is bent inward, it is a concave mirror. This type of mirror makes the object look taller and wider than it really is.
The images reflected in a convex mirror, then, look smaller than they are — they're compressed. This is why convex mirrors are used on cars: They reflect more in a smaller space. And a wider field of view means a much smaller blind spot than you have on the driver's side of the car.
Why Concave Mirrors are Used for MakeupIt really comes down to magnification. Since concave mirrors focus light inward and magnify the object (aka your face), it allows you to better see your skin, eyes, and lips when applying makeup.
Virtual images are always located behind the mirror. Virtual images can be either upright or inverted. Virtual images can be magnified in size, reduced in size or the same size as the object. Virtual images result when the reflected light rays diverge.
Hence, comparing all the given options, it can be concluded option B is correct; a street light bulb uses the convex mirror as reflectors. Note: Reflectors light bulbs are generally used in the heavy light application, in floodlights and in spotlights. Reflectors are used because they can spread light in a large area.
When they produce enlarged images, a smaller object takes up a wider angle and so more light rays from different objects at wider positions cannot be captured by the mirror. Hence, it has a lesser field of view than convex mirrors.
Virtual image is an image created when the outgoing rays from an object always diverge or move apart. A virtual object cannot make up a virtual image. When an object is placed between pole and focus, the image created by the concave mirror is magnified, virtual and erect.
There convex mirror is used to have wider angle of view. And concave mirror is not used as it gives inverted and diminished image.
Hint: A real image is a one which forms in front of the mirror whereas a virtual image is formed behind the mirror. The real image is always inverted and the virtual image is erect.
Regardless of the position of the object reflected by a convex mirror, the image formed is always virtual, upright, and reduced in size.
Real image is found when the rays of light converge at a point after reflection on a mirror or after refraction through a lens. Hence, a real image is always inverted. Therefore, the statement that a real image is always erect is false.
Convex mirrors are used in vehicles for rearview due to their wide field of view. And the convex mirror forms a virtual, erect and diminished image of the object. Therefore, magnification (m) produced by a rearview mirror fitted in vehicles is less than one.
A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point.
