Experiments in Physics-I

In a screw gauge, the zero of main scale coincides with fifth division of circular scale in figure (i). The circular divisions of screw gauge are $50.$ It moves $0.5 \mathrm{mm}$ on main scale in one rotation. The diameter of the ball in figure (ii) is:

If $n^{th}$ division of main scale coincides with $(n+1{)}^{th}$ divisions of vernier scale. Given one main scale division is equal to $\text{'}a\text{'}$ units. Find the least count of the vernier.

_____ helps in measuring holes, the width of pipes, the circumference of metal beads.

Write the usage of Vernier Calipers in Science Labs.

What is the function of vernier calliper?

The value of acceleration due to gravity at a planet is $\frac{1}{4}\mathrm{th}$ that of earth. If the time period of simple pendulum is $2 \mathrm{s}$ on the earth, then what will be the time period on the planet?

What is zero error and types of zero errors in vernier scale?

The zero error is equal to the length between the zero mark of the main scale and the zero mark of the vernier scale.

A vernier callipers has its main scale graduated in $\mathrm{mm}$ and $10$ divisions on its vernier scale are equal in length to $9 \mathrm{mm}$. When the two jaws are in contact, the zero of vernier scale is ahead of zero of main scale and $4^{\mathrm{th}}$ division of vernier scale coincides with a main scale division. Find the zero error of the vernier callipers.

Which of the following is incorrect statement regarding selection criteria of measuring instruments ?

End correction is a correction in : 

The end correction is :

$1 \mathrm{cm}$ of main scale of a vernier callipers is divided into $10 \mathrm{divisions}$. The vernier scale had ___, so that least count of the callipers is $0.005 \mathrm{cm}$.

The pitch of a screw gauge is 0.5 mm and there are 100 divisions on it circular scale. The instrument reads +2 circular scale divisions when nothing is put in between its jaws, when a wire is measured using this screw gauge main scale reads 3 pitch, while 31st division on the circular scale coincide with the reference line. The diameter of the wire is :

 The diameter of a cylinder is measured using a vernier calipers with no zero error. It is found that the zero of the vernier scale lies between $5.10 \mathrm{cm}$ and $5.15 \mathrm{cm}$ of the main scale. The vernier scale has $50$  divisions equivalent to $2.54 \mathrm{cm}$. The ${24}^{\mathrm{th}}$ division of the vernier scale exactly coincides with one of the main scale divisions. The diameter of the cylinder is, 

The diameter of a cylinder is measured using a vernier caliper with no zero error. It is found that the zero of the vernier scale lies between $5.10 \mathrm{cm}$ and $5.15 \mathrm{cm}$ of the main scale. The vernier scale have $50$ divisions equivalent to $2.45 \mathrm{cm}$. The ${24}^{\mathrm{th}}$ division of the vernier scale exactly coincides with one of the main scale divisions. The diameter of the cylinder is,

Backlash error corresponds to:-

A vernier calliper have a least count of main scale as $1 \mathrm{mm}$. $20$ division of vernier scale are matches with $19$ divisions of main scale. The thickness of the object measured by the vernier callipers will be

When the gap is closed without placing any object in the screw gauge whose least count is $0.005 \mathrm{mm},$ the $5^{\mathrm{th}}$ division on its circular scale coincides with the reference line on the main scale, and when a small sphere is placed, the reading on the main scale advances by $4$ divisions, whereas circular scale reading advances by five times to the corresponding reading when no object was placed. There are $200$ divisions on the circular scale. The radius of the sphere is:

There is screw gauge having main scale division as well as pitch of circular scale is $0.5\mathrm{ }\mathrm{mm}.$ Circular scale has $100$ divisions. If no object is placed then $\prime 0\prime$ of main scale is not visible and $3$ division lies below reference main scale If wire is placed in between jaws, reading on main scale is $5.5\mathrm{ }\mathrm{mm}$ and ${48}^{\mathrm{t}\mathrm{h}}$ division matches with reference on main scale. The diameter of wire is