about reflection of light?

Question

two plane mirrors m1 and m2 are held parallel to each other.a ray of light strikes one end of mirror m1 at 30degree.after how many reflections will it reach the other end of mirror m1

the lenght of mirrors are 30 cm each
and the are 15 cm apart

Answer 1

It depends on the length of the mirrors.

Answer 2

3

Answer 3

i assume 30 degrees is the angle the ray makes with the surface of m1. in this case the ray exits both mirrors after 2 reflections.

after the first incidence on m1, the ray moves off at 30degrees the other direction towards m2. the ray hits m2 25.98cm away (displacement parallel to mirrors). when reflects off m2 the ray will exit both mirrors and never contact m1 again.

15÷tan30°=25.98

if the 30° refers to the angle of incidence (convention for optical physics), then the angle made with the mirror surface is 60°. in this case the ray can reflect 3 times before escaping both mirrors. in both cases the ray will never exactly hit the end of m1.

Answer 4

Reflection of light (and other forms of electromagnetic radiation) occurs when the waves encounter a surface or other boundary that does not absorb the energy of the radiation and bounces the waves away from the surface. The simplest example of visible light reflection is the surface of a smooth pool of water, where incident light is reflected in an orderly manner to produce a clear image of the scenery surrounding the pool. Throw a rock into the pool (see Figure 1), and the water is perturbed to form waves, which disrupt the reflection by scattering the reflected light rays in all directions.




The incoming light wave is referred to as an incident wave, and the wave that is bounced away from the surface is termed the reflected wave. Visible white light that is directed onto the surface of a mirror at an angle (incident) is reflected back into space by the mirror surface at another angle (reflected) that is equal to the incident angle, as presented for the action of a beam of light from a flashlight on a smooth, flat mirror in Figure 2. Thus, the angle of incidence is equal to the angle of reflection for visible light as well as for all other wavelengths of the electromagnetic radiation spectrum. This concept is often termed the Law of Reflection. It is important to note that the light is not separated into its component colors because it is not being "bent" or refracted, and all wavelengths are being reflected at equal angles. The best surfaces for reflecting light are very smooth, such as a glass mirror or polished metal, although almost all surfaces will reflect light to some degree

Answer 5

In your book there is a formula for this in terms of right angles look it up.

In case they are parallel it will be infinite images or reflections will occur.

Length or the size, has nothing to do with it, it is angle that is the only thing that is important. at 90 degrees you see only one, the mirror that you face, you turn and you see the other.

Answer 6

well u haven't specified the length of the mirror. If the length of the mirror is infinite then number of reflections are also infinite. as angle of incidence is equal to the angle of reflection hence it will form an equilateral triangle. Hence, number of reflections is equal to the number of equilateral triangles formed.

Answer 7

It depends on the lenght of the mirror

Answer 8

Never.
If it's reflected off one mirror and another is parallel how in the world does it get to the other side? It can't be done in this world. So my answer is No no no no.

Answer 9

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Answer 10

acc 2 ur ques it shall b 1 check ur question again coz i think u mean sth else or specify d book n page no frm where u took it!!