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JIPMER 2019
Exam
JIPMER
Year
2019
Subject
Physics
Chapter
Waves and Sound

JIPMER 2019 · Physics · Waves and Sound

A stationary wave equation is given as y=20 (20 x) (1000 t) . What...

A stationary wave equation is given as y=20sin⁡(20x)cos⁡(1000t)y=20 \sin (20 x) \cos (1000 t). What will be the speed of stationary wave?

Options

  1. A20 m/s20 \mathrm{~m} / \mathrm{s}
  2. B50 m/s50 \mathrm{~m} / \mathrm{s}
  3. C2 cm/s2 \mathrm{~cm} / \mathrm{s}
  4. Dnot defined

Correct answer

D. not defined

Step-by-step solution

In stationary waves, the positions of nodes and antinodes do not change with time, hence speed of stationary wave is not defined.
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