logo

Ask Questions, Get Answers

 
X
 Search
Want to ask us a question? Click here
Browse Questions
Ad
Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Units and Measurement
0 votes

In an experiment the angles are measured using an instrument where $29$ divisions of main scale exactly coincide with $30$ division of vernier scale.If the smallest division in main scale is half a degree, then the least count of the instrument is

(a)half minute (b)one degree (c)half degree (d)one minute

Can you answer this question?
 
 

1 Answer

0 votes
 
vernier scale division$=\large\frac{29}{30}$ main scale division
least count$=1 MSD-1VSD$
$\qquad\qquad=1 MSD-\large\frac{29}{30}$$ MSD$
$\qquad\qquad=\large\frac{1}{30}$$ MSD=\large\frac{1}{30}$$\times .5 degree$
$\qquad\qquad=1 \;minute$
Hence d is the correct answer. 

 

answered Jun 18, 2013 by meena.p
edited Jan 9, 2014 by meena.p
 

Related questions

Ask Question
student study plans
x
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App
...