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Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee

Subject :NSO Class : Class 8

A source of sound is producing 18 oscillations in 6 seconds. Its frequency is

A0.3 Hz
B3 Hz
C108 Hz
D30 Hz

Ans 1:

The Address from Somaiya, Mumbai

Class : Class 6

Hamsavarshini Swaminathan from St Anns Senior Secondary School, Roorkee

Class : Class 10