Browse by Stream
QnA
Home
QnA
Go To Your Study Dashboard

Get Answers to all your Questions

header-bg qa
  • Home
  • Engineering
  • A travelling microscope has 20 division per cmon the main scale, while vernier scale have division is 100 and 35 vernier scale division have same as 25 main scale division. Find the least count of

A travelling microscope has 20 division per cmon the main scale, while vernier scale have division is 100 and 35 vernier scale division have same as 25 main scale division. Find the least count of travelling microscope

Option: 1

0.014 cm


Option: 2

0.013 cm


Option: 3

0.015 cm


Option: 4

0.011 cm


Answers (1)

best_answer

\begin{aligned} & \, 1 M \cdot S \cdot D =\frac{1}{20} \mathrm{~cm} \text {. } \\ & 1\, V \cdot S \cdot D=\frac{25}{35} \, \mathrm{MSD} \\ & =\frac{25}{35} \times \frac{1}{20} \mathrm{~cm} \\ & \text { Least count }=1 \mathrm{~M} \cdot \mathrm{S} \cdot \mathrm{D}-1 \text { V.S.D } \\ & =\left(\frac{1}{20}-\frac{25}{35} \times \frac{1}{20}\right){c m} \\ & =\frac{2}{20} \cdot\left[\frac{35-25}{35}\right] \\ & =0.014 \mathrm{~cm} \\ & \end{aligned}

Posted by

Pankaj

View full answer

JEE Main high-scoring chapters and topics

Study 40% syllabus and score up to 100% marks in JEE

Similar Questions

Trending Articles/News

anam-khan

JEE Main 2025: 2nd attempt? Mistakes to avoid, tips to improve score, percentile
anam-khan

JEE Main 2025: What to expect on exam day? Section-wise paper pattern, marking scheme, last-minute tips
anam-khan

JEE Main 2025 Live: NTA JEE session 2 exams from tomorrow; updates on admit card, exam pattern, passing marks

Latest Question