Question

6 Pitch of sound is determined by its
(a) Frequency
(c) speed
Amplitude
(d) loudness
9. An electroscope is a device which is used to an object is
(a) Charged
(c) free of cracks
(b) Magnetic
(d) hot
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Answer 1

Answer:

pitch of sound is determined bye its frequency..

an electeoscope is a device which is used to an object is charged