Question

If a ray travelling along the line $x=1$ gets reflected from the line $x+y=1$ then the equation of the line along which the reflected ray travels is?

• A. $y=0$
• B. $x-y=1$
• C. $x=0$
• D. None of these

Answer 1

The correct option is A $y=0$

The angle between $x=1$ and $x+y=1$ is 45 Degree

as angle $i=angler$

So angle $r=45Degree$

putting the Value in the formulae.

$\tan \theta =\frac{m_1-m_2}{1+m_1{m}_2}$

We get $m=0$

So the answer $y=0$