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QJEEM21Ph1bd0: JEE Main 2021 Physics - Class 11 JEEM21Ph1bd0 Solution: Two travelling waves produces a standing wave represented by…

Two travelling waves produces a standing wave represented by equation,

y = 1.0 mm cos(1.57 cm−1) x sin(78.5 s−1)t.

The node closest to the origin in the region x > 0 will be at x = .............. cm.

Step-by-Step Verified Solution

For node

cos(1.57 cm−1)x = 0

(1.57 cm−1)x = π2

x = π2(1.57) cm = 1 cm

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