Waves

Question 1

Transverse wave

Answer 1

The particles in the wave vibrates perpendicular to direction of the propagation. Light nipples formed on the surface of the water in the nipple tank.

Question 2

Longitudinal waves

Answer 2

The particles vibrates parallel to direction of propagation. eg sound wave

Question 3

Feature of wave

Answer 3

Amplitude waves- the max displacement from the equilibrium positions

Wave length - distance between 2 successive crust or troughs corresponding point of wave.

Period times t/s - is the time taken for 1 complete oscillations

Frequency h/hz- the number of complete oscillations per seconds

Question 4

Principle of superposition

Answer 4

Constructive inference- occurs when 2 wavefront meet in a place 2 crust or toughs arrive at or point at the same time. Resultant is the sum of the individual amplitude. Theses interferes constructively.

Wave1 & 2 are completely in phrase
Wave 3 amplitude double as well as frequency increase.

Question 5

Destructive inference

Answer 5

Occurs when a the wave 1/2 out of phase rust or toughs cancel each other. Inference destructively

Wave 1 & 2 are of of phase