

MCQOPTIONS
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1. |
One end of a long metallic wire of length L is tied to the ceiling. The other end is tied to massless spring of spring constant K. A mass m hangs freely from the free end of the spring. The area of cross-section and Young's modulus of the wire are A and Y respectively. If the mass is slightly pulled down and released, it will oscillate with a time period T equal to [IIT 1993] |
A. | \[2\pi \left( \frac{m}{K} \right)\] |
B. | \[2\pi {{\left\{ \frac{(YA+KL)m}{YAK} \right\}}^{1/2}}\] |
C. | \[6{{P}_{o}}\] |
D. | \[2\pi \frac{mL}{YA}\] |
Answer» C. \[6{{P}_{o}}\] | |