(5)
(B) State whether the following are True or False:
(1) The shadow cast by a point source of light is ‘umbra'.
(2) During lunar eclipse the shadow of the moon falls on the earth.
(3) Frequency increases if amplitude is increased.
Ultra sonic sounds are produced in the sonar system.
(5) The pegs on a sitar are used to adjust frequency of sound.
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Answer: im pretty sure its true bc of the second statement
Explanation:
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