Question bank/JEE Main/Physics
JEE MainPhysics
A steel wire is rigidly fixed at both ends. Its length, mass and
cross sectional area are 1m, 0.01 kg and
[IMAGE] respectively. Then the temperature of the wire is
lowered by[IMAGE]. If the transverse waves are setup by
plucking the wire at [IMAGE] from one end and assuming
that wire vibrates with minimum number of loops possible for such a
case. The frequency of vibration is 44n Hz. Find n. [Coefficient of
linear expansion of steel [IMAGE] and Young's
Show answer and solution
[IMAGE] The mechanical strain [IMAGE] The tension in wire[IMAGE] speed of wave in wire
[IMAGE] Since the wire is plucked at [IMAGE] from one end
The wire shall oscillate in [IMAGE] overtone (for minimum
number of loops)
TOPIC:Waves in a string
SUB TOPIC: Wire fixed at both ends
LEVEL:Moderate
[IMAGE] Since the wire is plucked at [IMAGE] from one end
The wire shall oscillate in [IMAGE] overtone (for minimum
number of loops)
TOPIC:Waves in a string
SUB TOPIC: Wire fixed at both ends
LEVEL:Moderate
Source: Grass-G / P-22 Physcis Paper 19 Dec Eng..docx
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