Short answerEasy1 mark
1(e)
Give one example of each when :
Chemical energy changes into electrical energy.
Topic: Sound and vibrations
Previous-year question practice database
Answer
Exam answer
Example: a cell/battery supplying current.
Explanation
Chemical energy is converted into electrical energy.
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Equal volumes of water are added to three cylindrical jars A, B and C of same height and radii rA, rB and rC respectively with rB < rA < rC. If you blow air into the mouth of these jars, which tube will produce the shrillest note?
(a) A
(b) B
(c) C
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