The figure below shows the scale of a voltmeter.

The least count of this voltmeter is :
(1) 1 V
(2) 0.5 V
(3) 5 V
(4) 0.05 V

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Solution

Least count of any scale is the value measured by a single division on it.
Total number of division on the given scale = 30
The maximum value that can be measured = 1.5 V

Least count = $\frac{1.5 V}{30} = 0.05 V$

Hence the correct answer is option 4.

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The figure below shows the scale of a voltmeter. The least count of this voltmeter is : (1) 1 V (2) 0.5 V (3) 5 V (4) 0.05 V

Least count of any scale is the value measured by a single division on it. Total number of division on the given scale = 30 The maximum value that can be measured = 1.5 V Least count = 1.5 V30=0.05 V Hence the correct answer is option 4.

The figure below shows the scale of a voltmeter.

The least count of this voltmeter is :
(1) 1 V
(2) 0.5 V
(3) 5 V
(4) 0.05 V

Least count of any scale is the value measured by a single division on it.
Total number of division on the given scale = 30
The maximum value that can be measured = 1.5 V

Least count = $\frac{1.5 V}{30} = 0.05 V$

Hence the correct answer is option 4.