Question

laws of reflection and refraction

Answer 1

Answer:

Laws of Reflection and Refraction

There are three laws which govern Reflection and Refraction. These can be very easily derived from geometry.They are:

Angle of Incident Ray with Normal(i) EQUALS Reflected Ray with Normal(r).(i=r)

Popularly known as SNELL'S LAW it is n1*sin i=n2*sin e where i is same as above,e is angle of refracted beam with normal.

The INCIDENT ray,REFLECTED ray, REFRACTED ray and the NORMAL at the point of incidence all lie in the same plane.The plane is referred as plane of incidence.

Q. What does the applet do?

A. The applet would generate an incident ray from the point you click in the UPPER LEFT REGION. The useful details that you will get are

Angle of incidence(i)

2.Angle of Reflection(r)

3.Angle of Refraction(e).

4.Critical Angle.

5.A message TOTAL INTERNAL REFLECTION will be displayed whenever such a thing happens.

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Answer 2

Answer:

The law of reflection states that when a ray of light reflects off a surface,the angle of incidence is equal to the angle of reflection

The law of refraction states that the incident ray ,the refracted ray and the normal to the interface , all lie in the same plane.