Two tunning forks A and B produce notes of frequencies 256 Hz & 262 Hz respectively. An unknown note sounded at the same time with A produce beats. When the note is sounded with B, beats frequency is twice as large. The unknown frequency could be

Two tuning forks, A and B, produce notes of frequencies 258 Hz and 262 Hz. An unknown note sounded with A produces certain beats. When the same note is sounded with B, the beat frequency gets doubled. The unknown frequency is

Two tuning forks,A and B produce notes of frequencies 258 Hz and 262 Hz.An unknown note sounded with A produces certain beats.When the same note is sounded with B ,th beat frequeny gets doubled.The unknown frequency

Two tuning forks x and y produce tones of frequencies 256 Hz and 262 Hz respectively, An unknown tone sounded with x produces, beats. When it is sounded with y the number of beats produced is doubled. The unknown frequency is

Two tuning forks x and y produce tones of frequencies 256 Hz and 262 Hz respectively, An unknown tone sounded with x produces, beats. When it is sounded with y the number of beats produced is doubled. The unknown frequency is

Two tuning forks A and B produce notes of frequencies 250 Hz and 260 Hz respectively. When an unknown note is sounded with A it produces x beats/sec. But when the same note is sounded with B, the number of beats produced per second becomes 4x. The unknown frequency could be

When two tunning forks A and B, having frequencies 512 Hz and 212 Hz, respectively, are vibrated simultaneously, the pitch of sound produced

When two tunning forks A and B are sounded together , 4 beats per second are heard . The frequency of the fork B is 384 Hz . When one of the prongs of the fork A is filled and sounded with B , the beat frequency increases , then the frequency of the fork A is