Waves questions
1337 published questions with worked solutions.
- A travelling wave is described by the equation y(x, t) = [0.05 sin (8x – 4t)] m The velocity of the wave is: [all the quantities...
- A train blowing a whistle of frequency 320 Hz approaches an observer standing on the platform at a speed of 66 m/s. The frequency...
- The distance between two consecutive points with phase difference of 60° in a wave of frequency 500 Hz is 6.0 m. The velocity...
- A person observes two moving trains, 'A' reaching the station and 'B' leaving the station with equal speed of 30 m/s. If both...
- A point source of 100 W emits light with 5% efficiency. At a distance of 5 m from the source, the intensity produced by the...
- For a solid rod, the Young's modulus of elasticity is 3.2 10^ 11 Nm^ -2 and density is 8 10^3kg m^ -3 . The velocity of...
- A vibrating string of certain length ℓ under a tension T resonates with a mode corresponding to the first overtone (third...
- A 20 cm long string, having a mass of 1.0 g, is fixed at both the ends. The tension in the string is 0.5 N. The string is set...
- Length of a string tied to two rigid supports is 40 cm. Maximum length (wave length in cm) of a stationary wave produced on it is
- A tuning fork arrangement (pair) produces 4 beats / sec with one fork of frequency 288cps. A little wax is placed on the unknown...
- A wave y = a ( t - kx) on a string meets with another wave producing a node at x = 0. Then the equation of the unknown wave is
- The displacement y of a wave travelling in the x-direction is given by y = 10^ -4 (600t - 2x + 3 ) metres where x is expressed in...
- A metal wire of linear mass density of 9.8 g/m is stretched with a tension of 10 kg-wt between two rigid supports 1 metre apart....
- The displacement y of a particle in a medium can be expressed as y = 10^ -6 (110t + 20x + /4)m, where t is in seconds and x in...
- When two tuning forks (fork 1 and fork 2) are sounded simultaneously, 4 beats per second are heard. Now, some tape is attached on...
- An observer moves towards a stationary source of sound, with a velocity one fifth of the velocity of sound. What is the...
- A whistle producing sound waves of frequencies 9500 Hz and above is approaching a stationary person with speed v ms^ -1 . The...
- A string is stretched between fixed points separated by 75 cm. It is observed to have resonant frequencies of 420 Hz and 315 Hz....
- A sound absorber attenuates the sound level by 20 dB. The intensity decreases by a factor of
- While measuring the speed of sound by performing a resonance column experiment, a student gets the first resonance condition at a...
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