The displacement of an oscillating particle varies with time 't' (in seconds) according as x = 2 cos(0.5π t ) metre. Then amplitude and time period are :
A
1 m, 4 s
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B
2 m, 4 s
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C
2 m, 2 s
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D
1 m, 2 s
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Solution
The correct option is B 2 m, 4 s x=A cos ωt Amplitude =2m w=0.5π ; T=2π0.5π=4sec