A vernier calipers has 25 divisions on the vernier scale. One centimeter on the main scale is divided into 20 equal parts. Find the L.C. of the vernier.
0.002cm
0.0025cm
O.02cm
0.025cm
A Vernier Callipers with 1MSD = 1cm has 5 divisions as the vernier. The least count is
0.8 mm
0.8 cm
0.5 cm
0.4 cm
The angular amplitude of the simple pendulum should not be more than which of the following?
200
100
50
10
S.I unit of length is
metre
centimetre
millimetre
decimetre
In railway stations __________ balances are used.
Platform
Triple beam
Compression
Roman Steelyard
Time of one vibration or 1/2 oscillation of a seconds pendulum is
2 second
Period of oscillation
1 Second
1 minute
Second is the time taken for 9,192,631,770 vibrations of a _____________ atom of atomic mass number 133.
Iodine
Calcium
Cesium
Radium
The S.I. unit of time is
light year
second
minutes
hour
If an instrument gives nearly equal values in repeated measurements, it possesses
Accuracy
Precision
Both accuracy and precision
Sensitivity
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 (=0.5°), then the least count of the instrument is
one minute
half minute
one degree
half degree
