The correct alternative is B Parallel come the initial ray​​​​​From the figure, the is plainly understood the the beam is arising out parallel to the initial ray. It is valid only when the aircraft of the last reflected ray and also the incident ray space in the exact same plane. 
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You are watching: Two mirrors are placed perpendicular to each other

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Two airplane mirrors are put perpendicular to each other. A beam strikes one winter and, after reflection, drops on the second mirror. The ray, ~ reflection from the 2nd mirror, will emerge:
Two airplane mirror A and B space oriented perpendicular to every other. A irradiate ray incident at angle θ on mirror A is likewise reflected by the winter B. If the reflected beam from winter B is parallel come the occurrence ray top top A, such the the beam reflected indigenous the an initial mirror together the very same angle the incidence ~ above the second mirror then discover the worth of θ.

Two mirrors are retained at an angle 60∘ between lock as displayed in the fig. A ray of irradiate strikes the an initial mirror and after have fun strikes the second mirror. If the last reflected beam goes parallel come the an initial mirror, calculate the angle of incidence.


A light ray is incident on a horizontal aircraft mirror at an edge of 45o. At what angle must a second plane mirror be put in order that the reflected ray finally be reflect horizontally native the 2nd mirror, as displayed in figure:
Two airplane mirrors space inclined come each various other at an angle 60∘. If a beam of light incident on the an initial mirror is parallel come the 2nd mirror, the is reflected from the 2nd mirror 
Two aircraft mirrors are inserted perpendicular to each other. A ray strikes one mirror and, ~ reflection, falls on the 2nd mirror. The ray, ~ reflection from the second mirror, will certainly emerge:
Two plane mirror A and B are oriented perpendicular to every other. A irradiate ray occurrence at angle θ on winter A is also reflected by the mirror B. If the reflected ray from winter B is parallel come the occurrence ray on A, such the the beam reflected from the very first mirror together the same angle the incidence on the second mirror then find the worth of θ.

Two mirrors are retained at an edge 60∘ between them as presented in the fig. A ray of irradiate strikes the very first mirror and after enjoy strikes the second mirror. If the last reflected ray goes parallel to the an initial mirror, calculate the edge of incidence.


A light beam is event on a horizontal aircraft mirror at an angle of 45o. In ~ what angle should a second plane winter be put in order that the reflect ray lastly be reflect horizontally from the 2nd mirror, as presented in figure:
Two airplane mirrors room inclined to each various other at an angle 60∘. If a beam of light occurrence on the first mirror is parallel come the second mirror, the is reflect from the second mirror 
Two aircraft mirrors are inserted perpendicular to each other. A beam strikes one winter and, after ~ reflection, falls on the second mirror. The ray, after ~ reflection from the 2nd mirror, will emerge:
Two plane mirror A and B are oriented perpendicular to every other. A irradiate ray incident at angle θ on mirror A is also reflected by the winter B. If the reflected ray from winter B is parallel come the incident ray on A, such that the ray reflected native the first mirror together the very same angle that incidence top top the second mirror then uncover the worth of θ.

Two winter are retained at an angle 60∘ between castle as displayed in the fig. A beam of irradiate strikes the very first mirror and after enjoy strikes the second mirror. If the final reflected ray goes parallel to the first mirror, calculation the edge of incidence.




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The bob of a basic pendulum executes simple harmonic motion in water v a period t, if the period of oscillation of the bob is t0 in air. Neglecting frictional pressure of water and also given that the thickness of the bob is (4/3)×1000kg/m3. What relationship in between t and also t0 is true?