Verify experimentally the laws reflection of sound
Answers
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
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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