NEET2016Physics-Waves
NEET 2016 Physics Wave Propagation on Strings MCQ Question
Type: MCQ-conceptual-Medium-Class 11
A uniform rope of length L and mass m₁ hangs vertically from a rigid support. A block of mass m₂ is attached to the free end of the rope. A transverse pulse of wavelength λ₁ is produced at the lower end of the rope. The wavelength of the pulse when it reaches the top of the rope is λ₂. The ratio λ₂/λ₁ is
A
m₂/m₁
B
m₁+m₂/m₁
C
m₁/m₂
D
m₁+m₂/m₂
Correct Answer
Option B
Detailed Explanation
The wavelength of a wave on a rope depends on the tension and mass per unit length. As the wave travels up the rope, the tension increases due to the weight of the rope below, increasing the wavelength.
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