Physics · 2009
NEET 2009 · Prelims · Code A · Q23
A wave in a string has an amplitude of 2 cm. The wave travels in the +ve direction of x axis with a speed of 128 m / sec. and it is noted that 5…
A wave in a string has an amplitude of $\displaystyle 2$ cm. The wave travels in the +ve direction of $\displaystyle x$ axis with a speed of $\displaystyle 128 \mathrm{~m} / \mathrm{sec}$. and it is noted that $\displaystyle 5$ complete waves fit in $\displaystyle 4 m$ length of the string. The equation describing the wave is :
Official answer
(1)
$\displaystyle y=(0.02) m \operatorname{Sin}(7.85 x-1005 t)$
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NEET (UG) 2009 Physics question, with the answer from NTA’s final answer key. Where our answers come from.