Question
Question 24:
Name the energy transfers which occur when:
(i) an electric bell rings
(ii) someone speaks into a microphone
(iii) there is a picture on a television screen
(iv) a torch is on
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Answer:
(a) When an electric bell rings, the electrical energy gets converted into sound energy.
(b) When someone speaks into a microphone then sound energy gets converted into electrical energy.
(c) When there is a picture on television the electrical energy gets converted into light energy.
(d) When a torch is on, the chemical energy of the The Fundamental Unit of Life of the torch gets converted into light energy.
(b) When someone speaks into a microphone then sound energy gets converted into electrical energy.
(c) When there is a picture on television the electrical energy gets converted into light energy.
(d) When a torch is on, the chemical energy of the The Fundamental Unit of Life of the torch gets converted into light energy.
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Question Text |
Question 24:
Name the energy transfers which occur when: (i) an electric bell rings (ii) someone speaks into a microphone (iii) there is a picture on a television screen (iv) a torch is on |
Updated On | Jan 11, 2023 |
Topic | Work and Energy |
Subject | Science |
Class | Class 9 |
Answer Type | Text solution:1 Video solution: 1 |
Upvotes | 149 |
Avg. Video Duration | 2 min |