Hertz , in his historical experiment, produced stationary EM waves and measured the distance between two successive nodes. Explain how this measurement enabled him to show that EM waves travelled with the same speed as the speed of light.

Waves of frequency 1000 Hz are produced in a Kundt's tube . The total distance between 6 successive nodes is 82.5 cm . The speed of sound in the gas filled in the tube is

On producing the waves of frequency 1000 Hz in a kundt's tube the total distance between 6 successive nodes n 85 cm. Speed of sound in the gas filled in the tude is

On producing the waves of frequency 1000 Hz in a kundt's tube the total distance between 6 successive nodes n 85 cm. Speed of sound in the gas filled in the tude is

The distance between any two adjacent nodes in a stationary wave is 15 cm. if the speed of the wave is 294 ms/, what is its frequency?

A sine wave is travelling ina medium. The minium distance between the two particles, always having same speed is

In a Young's double slit experiment using monochromatic light, the fringe pattern shifts by a certain distance on the screen when a mica sheet of refractive index 1.6 and thickness 1.964 microns is introduced in the path of one of the interfering waves. The mica sheet is then removed and the distance between the slits and screen is doubled. It is found that the distance between successive maxima now is the same as observed fringe shift upon the introduced of the mica sheet . Calculate the wavelength of the monochromatic light used in the experiment .

In a Young's double slit experiment using monochromatic light, the fringe pattern shifts by as certasin distance on the screen when a mica sheet of refractive inde 1.6 and thickness 1.964 micron (1 micron =10^-6m) is introduced in the path of one of the interfering waves. The mica sheet is then removed and the distance between the screen and the slits is doubled. It is found that the distance between the successive maxima now is the same as the observed frige-shift upon the introduction of the mica sheet. Calculate the wavelength of the monochromatic light used in the experiment.

A wave travelling along the length of a string is shown in Fig. 14.4.12. Using the scale on the given axis, find (i) The amplitude of the wave (ii) The wavelength of the wave (iii) If the frequency of the wave is 10 Hz, What is the speed of the wave? (iv) What is the initial phase of the wave ? (v) What is the phase difference between two points separated by a distance 10 cm ? (vi) If this wave is made to travel through water what is the wavelength of the wave, if the speed of, the waves in water is 10 m/s.

A tube closed at one end has a vibrating diaphragm at the other end , which may be assumed to be a displacement node . It is found that when the frequency of the diaphragm is 2000 Hz , a stationary wave pattern is set up in which the distance between adjacent nodes is 8 cm . When the frequency is gradually reduced , the stationary wave pattern reappears at a frequency of 1600 Hz . Calculate i. the speed of sound in air , ii. the distance between adjacent nodes at a frequency of 1600 Hz , iii. the distance between the diaphragm and the closed end , iv. the next lower frequencies at which stationary wave patterns will be obtained.

A particle on a stretched string supporting a travelling wave, takes 5.0 ms to move from its mean position to the extreme position. The distance between two consecutive particles, which are at their mean positions, is 2.0 cm. Find the frequency, the wavelength and the wave speed.