Physics · 2018
JEE Main · 16 April 2018, Shift 1 · Q13
Two sitar strings, A and B, playing the note 'Dha' are slightly out of tune and produce beats of frequency 5 Hz. The tension of the string B is…
Two sitar strings, A and B, playing the note 'Dha' are slightly out of tune and produce beats of frequency $\displaystyle 5$ Hz. The tension of the string B is slightly increased and the beat frequency is found to decrease by $\displaystyle 3$ Hz. If the frequency of A is $\displaystyle 425$ Hz, the original frequency of B is :
Official answer
(2)
$\displaystyle 420$ Hz
More from Waves
- Two loudspeakers ( L_1 and L_2 ) are placed with a separation of 10 m, as shown in figure. Both speakers are fed with an audio input signal of same…2026
- A travelling wave is described by the equation y(x, t)=[0.05 sin (8 x-4 t)] m The velocity of the wave is: [all the quantities are in SI unit]2023
- The equation of a wave travelling on a string is y= sin [20 π x+10 π t], where x and t are distance and time in SI units. The minimum distance…2025
- A string 2.0 m long and fixed at its ends is driven by a 240 Hz vibrator. The string vibrates in its third harmonic mode. The speed of the wave and…2019
- A tuning fork is vibrating at 250 Hz. The length of the shortest closed organ pipe that will resonate with the tuning fork will be \ \ \ \ cm. (Take…2021
- A string is clamped at both the ends and it is vibrating in its 4^th harmonic. The equation of the stationary wave is Y=0.3 sin (0.157 x) cos (200 π…2019
- In an experiment with sonometer when a mass of 180 g is attached to the string, it vibrates with fundamental frequency of 30 Hz. When a mass m is…2023
- A source and a detector move away from each other in absence of wind with a speed of 20 m/s with respect to the ground. If the detector detects a…2021
JEE Main 2018 Physics question, with the answer from NTA’s final answer key. Where our answers come from.