Question

TRUE and FALSE Questions

5. Temperature of as gas is the average kinetic energy of the gas molecules.

            ANS:

6. Wavelength of a wave is the distance between two successive like points.

            ANS:   

7. In longitudinal waves, the amplitude of the wave parallel to the direction of propagation.

            ANS:

8. Sound is an example of transverse wave

            ANS:   

9. Speed of a wave is the product of its wavelength and frequency.

            ANS:   

10. Frequency of sound wave increases as the temperature raises.

            ANS:   

Answer 1

(5) FALSE

Average kinetic energy of the gas molecules is directly proportional to the temperature of the gas. This is not equal to the temperature of the gas.

(6) TRUE

Wavelength is determined by the distance between two points in the same phase, ie, the maximum of the sine wave, zero to zero, etc.

(7) TRUE

In longitudinal waves, particle movement is parallel to the direction of wave propogation.

(8) FALSE

Sound waves are longitudinal waves.

(9) TRUE

v = n x (frequency x wavelength)

(10) TRUE

At higher temperature, molecules start to vibrate faster so frequency increases.