1
JEE Main 2020 (Online) 2nd September Evening Slot
Numerical
+4
-0
A wire of density 9 $$ \times $$ 10–3 kg cm–3 is stretched between two clamps 1 m apart. The resulting strain in the wire is 4.9 $$ \times $$ 10–4. The lowest frequency of the transverse vibrations in the wire is : (Young’s modulus of wire Y = 9 $$ \times $$ 1010 Nm–2), (to the nearest integer), _________
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2
JEE Main 2020 (Online) 8th January Morning Slot
Numerical
+4
-0
A one metre long (both ends open) organ pipe is kept in a gas that has double the density of air at STP. Assuming the speed of sound in air at STP is 300 m/s, the frequency difference between the fundamental and second harmonic of this pipe is ________ Hz.
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