science
Grade-1
Easy
Question
What signals help you know that a laptop is on?
- The screen of the laptop is on
- It makes a specific sound
- It vibrates
- It pulls objects towards itself
Hint:
This question is from the topic ''Kinds of Signals''
The correct answer is: The screen of the laptop is on
- If the screen of the laptop is on(lit up) we say that the laptop is turned on
- This is a kind of Light signal
- So option 1 is correct.
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