Question

Ashwani a factory owner wants to thanks the workers by getting a decorated spherical ball. the diameter of sphere is (2a+5)cm what is the curved surface area of cuboid
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Answer 1

Answer:

Draw lines showing the position of

the plane mirror, the incident ray and

the reflected ray on the paper with the

help of your friends. Remove the mirror

and the comb. Draw a line making an

angle of 90º to the line representing the

mirror at the point where the incident

ray strikes the mirror. This line is known

as the normal to the reflecting surface

at that point (Fig. 16.2). The