Waves Test - 52...

Light from two coherent sources of the same amplitude A and wavelength λ illuminates the screen. The intensity of the central maximum is I₀. If the sources were incoherent, the intensity at the same point will be

In the experiment to determine the speed of sound using a resonance column

Two tuning forks when sounded together produced 4 beats/sec. The frequency of one fork is 256. The number of beats heard increases when the fork of frequency 256 is loaded with wax. The frequency of the other fork is

Beats are the result of

Two adjacent piano keys are struck simultaneously. The notes emitted by them have frequencies n₁ and n₂. The number of beats heard per second is

Two tuning forks of frequencies n₁ and n₂ produces n beats per second. If n₂ and n are known, n₁ may be given by

If two tuning forks A and B are sounded together, they produce 4 beats per second. A is then slightly loaded with wax, they produce 2 beats when sounded again. The frequency of A is 256. The frequency of B will be

A tuning fork of frequency 250 Hz produces a beat frequency of 10 Hz when sounded with a sonometer vibrating at its fundamental frequency. When the tuning fork is filed, the beat frequency decreases. If the length of the sonometer wire is 0.5 m, the speed of the transverse wave is

A tuning fork gives 5 beats with another tuning fork of frequency 100 Hz. When the first tuning fork is loaded with wax, then the number of beats remains unchanged, then what will be the frequency of the first tuning fork ?

Tuning fork F₁ has a frequency of 256 Hz and it is observed to produce 6 beats/second with another tuning fork F₂. When F₂ is loaded with wax, it still produces 6 beats/second with F₁. The frequency of F₂ before loading was