Question

Verify experimentally the laws reflection of sound​

Answer 1

Answer:

Step-by-step explanation:

Take a balloon and play sit on to the box and it quickly now add some sugar crystals on the balloon and before tying the balloon to the box place a mobile phone and tell your friend to call that phone now you observed that the sugar crystals and the balloon move on this tells us sound has energy

Answer 2

Step-by-step explanation:

VERIFICATION

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

● The angle of incidence is equal to the angle of reflection.

BUT IN EXPERIMENTLLY

AIM :- To prove the law of reflection through a plane mirror.

APPARATUS :- Soft board, white sheet of paper, optical pins, mirror, pencil, protractor and ruler.

PROCEDURE :-

● Place the paper on the board and fix.

● Place the mirror vertically on the white sheet of paper and trace its edge.

● Draw a line at right angles to the edge of the mirror to act as the normal - ON .

● Stating with angle as 30 degree, draw an incident ray and place two pins, P and Q along it as shown.

● With your eyes at position shown, place two other pins R and S to coincide with the image of P and Q as seen in the mirror.

● Remove pins R and S and join the dots left with a straight line.

● Measure and record angle R .

● Repeat procedure 4, 5, 6 & 7 for angle I = 35 degree, 40 degree, 45 degree, 50 degree and 55 degree.

● Record the results in the table .

OBSERVATION

● The angle of incidence equals the angle of reflection.

● Incident ray, reflected ray and the normal at the point of incidence life in the same plane.

Hence, the laws of reflection proved.

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