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Beats for NEET: 14 solved questions

Real NEET paper questions on beats, part of waves. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 1992 to 2020. No sign-in needed to read them.

What this topic asks

• Beat frequency — 9 questions
• Unknown fork frequency and tuning — 5 questions

All 14 questions with solutions

• In a guitar, two strings A and B made of same material are slightly out of tune and produce beats of frequenc… NEET 2020
• Three sound waves of equal amplitudes have frequencies (n-1), n, (n+1). They superimpose to give beats. The n… NEET 2016 Phase-II
• A source of unknown frequency gives 4 beats/s when sounded with a source of known frequency 250 Hz. The secon… NEET 2013
• Two sources of sound placed close to each other, are emitting progressive waves given by y₁=4 sin 600π t and… NEET 2012
• Two identical piano wires, kept under the same tension T have a fundamental frequency of 600 Hz. The fraction… NEET 2011 Mains
• A tuning fork of frequency 512 Hz makes 4 beats per second with the vibrating string of a piano. The beat fre… NEET 2010
• Each of the two strings of length 51.6 cm and 49.1 cm are tensioned separately by 20 N force. Mass per unit l… NEET 2009
• Two vibrating tuning forks produce waves given by y₁=4 sin 500π t and y₂=2 sin 506π t. Number of beats produc… NEET 2006
• Two sound waves with wavelengths 5.0 m and 5.5 m respectively, each propagate in a gas with velocity 330 m/s.… NEET 2006
• Two waves of lengths 50 cm and 51 cm produced 12 beats per sec. The velocity of sound is NEET 1999
• A source of sound gives 5 beats per second, when sounded with another source of frequency 100 second⁻¹. The s… NEET 1995
• A source of frequency u gives 5 beats/second when sounded with a source of frequency 200 Hz. The second harmo… NEET 1994
• Wave has simple harmonic motion whose period is 4 seconds while another wave which also possesses simple harm… NEET 1993
• For production of beats the two sources must have NEET 1992