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In a sinusoidal wave, the time required for a particular point to move from maximum displacement to zero displacement is 0.170 s. The frequency of wave is

Asked in NEET 1998 · Wave parameters from the equation

• (1) 0.73 Hz
• (2) 0.36 Hz
• (3) 1.47 Hz
• (4) 2.94 Hz

Step-by-step solution

Why the other options are wrong

• (1) 0.73 Hz means T=1.36 s and a quarter period of 0.34 s — twice the time measured.
• (2) 0.36 Hz means T=2.72 s and a quarter period of 0.68 s — four times it.
• (4) Comes from reading the 0.170 s as half a period; maximum displacement to zero is a quarter of a cycle, not half.

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