MHT CET · Physics · Waves and Sound

A transverse wave is propagating on the string. The linear density of a vibrating string is $10^{- 3} k g / m .$ The equation of the wave is $Y = 0.05 \sin (x + 15 t),$ where, $x$ and $Y$ are in metre and time in seconds. The tension in the string is

A $0.2 N$
B $0.250 N$
C $0.225 N$
D $0.325 N$

Verified Solution

Answer & Solution

Correct Answer

(C) $0.225 N$

Step-by-step Solution

Detailed explanation

∵ v = \sqrt{\frac{T}{μ}}

\frac{ω}{k} = \sqrt{\frac{T}{μ}}

\frac{15}{1} = \sqrt{\frac{T}{10^{- 3}}}

∴ T = 225 \times 10^{- 3} \Rightarrow T = 0.225 N

Apply the relevant identity from the chapter and substitute the values established in the previous step, keeping the original constraint in view.

Use the simplified expression to isolate the unknown, then plug the result back into the question setup to confirm the working is internally consistent.

Cross-check against a boundary or limiting case. Both the dimensional balance and the qualitative behaviour at the extreme should agree with the candidate answer.

Combine the steps above to identify the correct option. The remaining choices each fail at least one of the consistency, dimensional, or boundary checks.

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A transverse wave is propagating on the string. The linear density of a vibrating string is 10-3kg/m. The equation of the wave is Y=0.05sin⁡x+15t, where, x and Y are in metre and time in seconds. The tension in the string is

Step-by-step Solution

A transverse wave is propagating on the string. The linear density of a vibrating string is $10^{- 3} k g / m .$ The equation of the wave is $Y = 0.05 \sin (x + 15 t),$ where, $x$ and $Y$ are in metre and time in seconds. The tension in the string is