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Column I
Column II
(A) Tuning fork \( \mathrm{A} \) of frequency
(P) \( 128 \mathrm{~Hz} \)
\( P \) 256 produces 4 beats/sec with fork B. Frequency
W of \( B \) may be
(B) A is loaded slightly. Beats
(Q) \( 260 \mathrm{~Hz} \) frequency decreases.
Frequency of \( \mathrm{B} \) is
(C) A is filed slightly. Beats
(R) \( 252 \mathrm{~Hz} \) frequency decreases.
Frequency of \( \mathrm{B} \) is
(D) If \( \mathrm{A} \) were octave of \( \mathrm{B} \),
(S) \( 264 \mathrm{~Hz} \) frequency of \( \mathrm{B} \) is
(1) A-QR, B-R, C-Q, D-P(2) A-Q, B-P, C-R, D-S
(3) A-Q, B-S, C-P, D-R
(4) A-P, B-Q, C-S, D-R
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