A vernier calipers has marks on the main scale. It has 20 equal divisions on the Vernier scale which match with 16 main scale divisions. For this Vernier calipers, the least count is
Get Answer
20 divisions on the vernier scale
divisions of main scale
division on the vernier scale
We know that least count
Two full turns of the circular scale of a screwgauge cover a distance of on its main scale. The total number of divisions on the circular scale is 50 . Further, it is found that the screwgauge has a zero error of . While measuring the diameter of a thin wire, a student notes the main scale reading of and the number of circular scale divisions in line with the main scale as 35 . The diameter of the wire is
Least count of screwgauge
Reading main scale reading + circular scale reading L.C -(zero error)
In an experiment the angles are required to be measured using an instrument, 29 divisions of the main scale exactly coincide with the 30 divisions of the vernier scale. If the smallest division of the main scale is half- a degree , then the least count of the instrument is
halfminute
one degree
half degree
'sue minute
30 Divisions of vernier scale coincide with 29 divisions of main scales
Therefore 1 V.S.D MSD
10(b) 20(c) . 10
(c) 1. 50
Ans- D
(d)
and are least and number of readings are maximum in option (d), therefore the measurement of is most accurate with data used in this option.
To determine the speed of sound in air at room temperature we use a
vernier callipers
meter bridge
resonance tube
capilary tube
In the diagram shown, the zero correction is
division of vernier scale coincide with any division on main scale, 50 .
Zero error and 0 of vernier sale is right to the 0 of main scale.
So, zero correction is '-ve'. i.e. Actual length will be less than the measured length.
The vernier constant of two vernier callipers and are and respectively. Which one can measure the length of an object more accurately?
Vernier A
Vernier B
Accuracy in measurement does not depend on vernier constant
Both and are equally accurate.
Lower the vernier constant, more accurate measurement is possible by it.
The following informations are labelled on a screw gauge : Least count Pitch
What is the number of circular divisions on head scale?
50
100
200
10
We have, Least count
i.e., No. of circular divisions on head scale
A student noticed the following readings while measuring the internal diameter of a tube with a vernier callipers
Reading of main scale (in )
Reading of vernier scale (in )
Positive zero error (in )
The value of the internal diameter is
Diameter main scale reading + vernier scale reading-zero error.
The vernier constant (V.C) of a vernier callipers is . If 10 divisions of the vernier scale is equivalent to 9 divisions of the main scale then the value of one smallest division of the main scale is
V.C. or,
What is the zero error in the diagram?
0 of the circular scale is up to the refrence line, so, it is ' ' and division coincides with refrence line, so zero error is .
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