Alight ray,1is incident on a mirror M1at an angle of 20°, as shown in the given figure. Mirrors M1and M2are at a right angle to each other. M2is fixed, while M1can be rotated about pointO. Ray3is the reflected ray from the mirror system.xis the angle of reflection for mirror M2.

Ifthe angle between the two mirrors is in

creased 10°, thenxwill

A.
B.
C.
D.
PLEASE EXPLAIN WHY AND TELL THE CORRECT ANWER!!!!!!!!!!

.

If the angle between the two mirrors is increased by 10°, then the angle of incidence will reduce by 10°. Considering the law of reflection, the path of the incident ray, 1can be traced as shown in the following figure.

Since the angle of incidence and the angle of reflection are equal, ray 2will become parallel to mirror M2. Therefore, the reflected ray from mirror M1will not touch mirror M2. Hence, xwill become infinity.

The correct answer is C.

  • 1

.also decrease by 10(recheck the options) because

< between the mirrors is 100

< of incidence= <of reflection=30

Hence  For ray 2 < of incidence= <of reflection=30 after a normal is drawn at P.

Hence,x which previously was 90-20=70 will become

x=90-30=60

pls message me after rechecking

  • 0
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