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State the law of reflection & …

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State the law of reflection & refraction. (4 marks)

    • Posted by Paru ? 5 years, 1 month ago

    CBSE > Class 10 > Science
    • 3 answers

    Paru ? 5 years, 1 month ago

    Thanks for both of you ?✌?. But I saw the message late ?

    1Thank You

    King Adithya H M... 5 years, 1 month ago

    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.

    1Thank You

    Yogita Ingle 5 years, 1 month ago

    The two laws of reflection are:

             (i) the incident ray, the reflected ray and the normal (at the point of incidence), all lie in the same plane.

             (ii) the angle of reflection (<i>r</i>) is always equal to the angle of incidence (<i>i</i>)

                      ∠<i>r</i> = ∠<i>i</i>

    Snell’s law of refraction,

                    

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