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प्रश्न
One centimetre on the main scale of vernier callipers is divided into ten equal parts. If 10 divisions of vernier scale coincide with 8 small divisions of the main scale, the least count of the callipers is ______.
पर्याय
0.005 cm
0.05 cm
0.02 cm
0.01 cm
MCQ
रिकाम्या जागा भरा
उत्तर
One centimetre on the main scale of vernier callipers is divided into ten equal parts. If 10 divisions of vernier scale coincide with 8 small divisions of the main scale, the least count of the callipers is 0.02 cm.
Explanation:
1 main scale div = 0.1 cm
10V = 8S
V = `8/10` S.
S - V = S - `8/10`S
= `2/10`S
= `1/5`S
But 1S = 0.1 cm
= `0.1/5`
= 0.02 cm
Least count = 0.02 cm
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