SATHEE: Physical World Units and Measurements

Physical World Units and Measurements - Result Question 48

49. In a vernier calliper $N$ divisions of vernier scale coincides with $(N - 1)$ divisions of main scale (in which length of one division is $1 m m$ ). The least count of the instrument should be [1994]

(a) $N$

(b) $N - 1$

(d) $1 / N - 1$

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Answer:

Correct Answer: 49. (c)

Solution:

$= 1 M S D - (\frac{N - 1}{N}) M S D$ $= \frac{1}{N} M S D = \frac{1}{N} \times \frac{1}{10} c m = \frac{1}{10 N}$

Smaller value of the least count, higher is the accuracy of measurement. Accuracy of measurement is higher when number of significant figure after the decimal in measurement is larger.

Physical World Units and Measurements - Result Question 48

49. In a vernier calliper $N$ divisions of vernier scale coincides with $(N - 1)$ divisions of main scale (in which length of one division is $1 m m$ ). The least count of the instrument should be [1994]

Answer:

Engineering Preparation

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Physical World Units and Measurements - Result Question 48

49. In a vernier calliper N divisions of vernier scale coincides with (N−1) divisions of main scale (in which length of one division is 1mm ). The least count of the instrument should be [1994]

Answer:

Engineering Preparation

Medical Preparation

NCERT Books & Solutions

Important Resources

Other Resources

Syllabus

Test Platform

Sample Mock Test

Mentorship

NCERT Exercise Video Solution

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49. In a vernier calliper $N$ divisions of vernier scale coincides with $(N - 1)$ divisions of main scale (in which length of one division is $1 m m$ ). The least count of the instrument should be [1994]