Question

1,7 A triangle is formed by the straight lines
x + 2y - 3 = 0, 3x - 2y + 7 = 0 and
y + 1 = 0. Find graphically :
(i) the co-ordinates of the vertices of the triangle.
(ii) the area of the triangle.​

Answer 1

Answer:

Laws of Refraction

The incident ray, the refracted ray and the normal to the interface of two transparent media at the point of incidence, all lie in the same plane.

The ratio of the sine of the angle of incidence to the sine of the angle of refraction is a constant, for the light of a given colour and for the given pair of media. This law is also known as Snell’s law of refraction.

Answer 2

Answer:

Hope it will help u...!!!!