Question

verify the laws of reflection by an activity​

Answer 1

Answer:

Explanation:

Draw a straight line PQ making certain angle (angle i) with ON as shown in figure. Fix two pins at the points P and Q on the paper vertically. Observe the image P| of the pin P and Q| of the pin Q, in the mirror kept along the line AB. Fix two more pins R and S such that they are in the same line as that of P| and Q.

Answer 2

Answer:

verification of law of reflection​

Explanation:

The law states that

The incident ray, reflected ray, and normal to the surface lies in the same plane.

The angle of incidence i is equal to the angle of reflection r

Apparatus

A plane mirrors, scale, protractor, board, white paper, nails.

Procedure

Now fix the paper onto the board with the help of nails

Draw a straight line AB at the center of the paper and also a normal (ON) to AB at point 'O'.

Place the mirror near to one edge of the paper and mark its position.

Draw a straight line PQ making certain angle (Angle i) with ON.

Place two nails vertically (P,Q) on one side of the normal so that line joining two pins will make an angle of 30 degree with the normal.

Observe the image P' of the pin 'P' and 'Q' of the pin 'Q' in the mirror kept along the line AB.

Similarly you should also place two more pins R and S such that they are in the same line as that of P' and Q'.

Now you should extend the lines and then measure the angle of incidence and angle of reflection produced.

Repeat the above procedure for 2 more incident angles, For example 45 degree and 60 degree.

Note down the Readings

Results  

In all cases we verify that   that Angle of incidence = Angle of reflection

We also verify that The incident ray, reflected ray, and normal to the surface lies in the same plane.