Why are parabolic mirrors used as car head lamps?

The correct answer is Parabolic Concave mirror. A parabolic concave mirror is used in the headlamps of the car as a reflector. These mirrors are capable of directing the light at a particular point as they have converging power. These mirrors provide clear visibility in nights and fog.

Why are parabolic mirrors better?

Parabolic mirrors perform better than spherical mirrors when collimating light emitted by a point source or focusing a collimated beam. Parabolic mirrors (Figure 1) focus all rays in an incoming, collimated light beam to a diffraction-limited spot.

Why do we use parabolic mirror instead of concave mirror?

Due to large aperture of mirror, marginal rays give a divergent beam. But in case of parabolic mirror, when source is at the focus, beam of light produced over the entire cross-section of the mirror is a parallel beam.

What is the advantage of using a parabolic concave mirror as objective of a telescope?

Because the light rays are parallel to each other, the reflector telescope’s mirror has a parabolic shape. The parabolic-shaped mirror focusses the parallel lights rays to a single point.

Why do we prefer a convex mirror as a rear view mirror in vehicles?

We prefer a convex mirror as a rear-view mirror in vehicles because it gives a wider field of view, which allows the driver to see most of the traffic behind him. Convex mirrors always form a virtual, erect, and diminished image of the objects placed in front of it.

Which kind of mirrors are used in the head lights of a motor car and why?

Concave mirror is used in headlights of vehicles, because when the bulb of headlight is placed at focus of concave mirror, it allows the light to spread out to infinity (longer distances).

Are parabolic mirrors concave?

A concave mirror whose cross-section is shaped like the tip of a parabola. Most of the light, radio waves, sound, and other radiation that enter the mirror straight on is reflected by the surface and converges on the focus of the parabola, where being concentrated, it can be easily detected.

What is the use of parabolic mirror?

In optics, parabolic mirrors are used to gather light in reflecting telescopes and solar furnaces, and project a beam of light in flashlights, searchlights, stage spotlights, and car headlights.

Why do we use parabolic?

Parabolas are frequently used in physics and engineering for things such as the design of automobile headlight reflectors and the paths of ballistic missiles. Parabolas are frequently encountered as graphs of quadratic functions, including the very common equation y=x2 y = x 2 .

What do parabolic mirrors do?

A parabolic (or paraboloid or paraboloidal) mirror is a concave reflective surface that is used to project or collect energy or a type of radiation including light, sound, or radio waves.

What are the advantages of concave mirror?

“Advantages of concave mirrors:

• These “mirrors” are used to view the “enlarged image” of the tooth by dentists.
• It is also used in “vehicle headlights”
• It is also used in solar cookers.

Why does a driver use a convex mirror instead of a plane mirror as a rear view mirror illustrate your answer with the help of a ray diagram?

A convex mirror diverges the incident beam and always forms a virtual, small and erect image between its pole and focus. Thus, a driver can see all the traffic approaching from behind. This fact enables the driver to use it as a rear view in vehicles to see all the traffic approaching from behind.