Question
What are laws of reflection and refraction?
✓
Answer
Laws of reflection:
a. Reflected ray lies in the plane formed by incident ray and the normal drawn at the point of incidence and the two rays are on either side of the normal.
b. Angles of incidence and reflection are equal ( $i = r$ ).Laws of refraction:
a. Refracted ray lies in the plane formed by incident ray and the normal drawn at the point of incidence; and the two rays are on either side of the normal.
b. Angle of incidence $\left(\theta_1\right)$ and angle of refraction $\left(\theta_2\right)$ are related by Snell's law, given by, $n_1 \sin \theta_1=n_2 \sin \theta_2$ where, $n _1, n _2=$ refractive indices of medium $1$ and medium $2$ respectively.
a. Reflected ray lies in the plane formed by incident ray and the normal drawn at the point of incidence and the two rays are on either side of the normal.
b. Angles of incidence and reflection are equal ( $i = r$ ).Laws of refraction:
a. Refracted ray lies in the plane formed by incident ray and the normal drawn at the point of incidence; and the two rays are on either side of the normal.
b. Angle of incidence $\left(\theta_1\right)$ and angle of refraction $\left(\theta_2\right)$ are related by Snell's law, given by, $n_1 \sin \theta_1=n_2 \sin \theta_2$ where, $n _1, n _2=$ refractive indices of medium $1$ and medium $2$ respectively.
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