Question 5: Ray Optics

Question

In the given figure, the angle of reflection is

Accepted Answer

$$\begin{aligned}
& 	ext { Given, } y=x^2 \\
& \qquad \frac{d y}{d x}=2 x=2 	imes \frac{1}{2}=1 \\
& \Rightarrow 	an 	heta=1=m \\
& \Rightarrow \quad 	heta=45^{\circ}
\end{aligned}$$
The slope of normal at $$B$$
$$\begin{aligned}
m_2 & =-\frac{1}{m_1}=-\frac{1}{1}=-1 \\
\Rightarrow \quad 	heta & =-45^{\circ}
\end{aligned}$$
From the figure angle of incidence is $$45^{\circ}$$. Hence, angle of reflection is $$45^{\circ}$$

Answer

30$$^\circ$$

Answer

60$$^\circ$$

Answer

45$$^\circ$$

Answer

None of these

Ray Optics

In the given figure, the angle of reflection is

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