Assignment

Name the physical quantity whose unit is called $\mathrm{hertz}$ .

Name the physical quantity described by the maximum displacement of a particle from its mean position.

Describe an activity to show that sound needs a material medium to travel. 

Write three differences between transverse wave and longitudinal wave.

Waves of frequency $100 \mathrm{Hz}$ are produced in a string as shown. Give its amplitude.

Waves of frequency $100 \mathrm{Hz}$ are produced in a string as shown. Give its wavelength.

Waves of frequency $100 \mathrm{Hz}$ are produced in a string as shown. Give its velocity.

Describe the process of propagation of sound in air with the help of suitable diagram. Draw the graph of density versus position for a sound wave.