Match List - I with List - II.
| List – I | List – II |
|---|---|
|
A. Coefficient of viscosity B. Surface tension C. Pressure D. Surface energy |
I. [ML−1T−2] II. [ML2T−2] III. [ML0T−2] IV. [ML−1T−1] |
Choose the correct answer from the options given below :
In an experiment, a set of reading are obtained as follows - 1.24 mm, 1.25 mm, 1.23 mm, 1.21 mm. The expected least count of the instrument used in recording these readings is _______ mm.
When both jaws of vernier callipers touch each other, zero mark of the vernier scale is right to zero mark of main scale, $4{ }^{\text {th }}$ mark on vernier scale coincides with certain mark on the main scale. While measuring the length of a cylinder, observer observes 15 divisions on main scale and $5^{\text {th }}$ division of vernier scale coincides with a main scale division. Measured length of cylinder is $\_\_\_\_$ mm.
(Least count of Vernier calliper $=0.1 \mathrm{~mm}$ )
In a vernier callipers, 50 vernier scale divisions are equal to 48 main scale divisions. If one main scale division $=0.05 \mathrm{~mm}$, then the least count of the vernier callipers is $\_\_\_\_$ mm.
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