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In each of the following questions read the two statements and choose if
Statement-1. In the equation of a plane progressive wave, \( y \) and \( r \) have the same units
\[
y=r \sin \left[\frac{2 \pi t}{T}-\frac{2 \pi x}{\lambda}\right]
\]
Statement-2. Argument of sine is angle having no units.
(A) Statement-1 is true; Statement- 2 is true ; Statement- 2 is correct explanation of Statement-1.
(B) Statement-1 is true ; Statement-2 is true; Statement-2 is not a correct explanation of Statement-1.
(C) Statement-1 is correct ; Statement- 2 is false.
(D) Statement-1 is false ; Statement-2 is true.
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