किस उपकरण से समय मापा जाता है?
Which instrument is used to measure time?
Explanation opens after your attempt
C. स्टॉपवॉचStopwatch
Concept
A stopwatch measures time. Choosing the correct instrument is important in an experiment.
Why this answer is correct
The correct answer is C. स्टॉपवॉच / Stopwatch. A stopwatch measures time. Choosing the correct instrument is important in an experiment.
Exam Tip
स्टॉपवॉच समय मापती है। प्रयोग में सही उपकरण चुनना जरूरी है।
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