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(B) When a light ray undergoes successive reflections from two plane mirrors inclined at an angle $	heta$,the total deviation $\delta$ produced is gi

Vedclass · Accepted Answer

$280$

Vedclass · Answer

(B) When a light ray undergoes successive reflections from two plane mirrors inclined at an angle $	heta$,the total deviation $\delta$ produced is given by the formula $\delta = 360^o - 2	heta$.Here,the angle of inclination between the mirrors is $	heta = 40^o$.Substituting the value of $	heta$ into the formula:$\delta = 360^o - 2(40^o)$$\delta = 360^o - 80^o$$\delta = 280^o$.Note: The angle of incidence on the first mirror does not affect the net deviation when the ray reflects off both mirrors.

$A$ ray gets successively reflected from two mirrors inclined at an angle of $40^o$. If the angle of incidence on the first mirror is $30^o$,then the net deviation of this ray after two reflections is: (in $^o$)

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