(English Medium) ICSE Class 9 - CISCE Question Bank Solutions for Physics

A micrometre screw gauge has a negative zero error of 8 divisions. While measuring the diameter of a wire the reading on the main scale is 3 divisions and the 24th circular scale division coincides with baseline.
If the number of divisions on the main scale are 20 to a centimetre and circular scale has 50 divisions, calculate

1. pitch
2. observed diameter.
3. least count
4. corrected diameter.

A micrometre screw gauge has a negative zero error of 7 divisions. While measuring the diameter of a wire the reading on the main scale is 2 divisions and 79th circular scale division coincides with baseline.
If the number of divisions on the main scale is 10 to a centimetre and circular scale has 100 divisions, calculate

1. pitch
2. observed diameter
3. least count
4. corrected diameter.

For what range of measurement is micrometre screw gauge used?

What do you understand by the following term as applied to micrometre screw gauge?

Sleeve cylinder

What do you understand by the following term as applied to micrometre screw gauge?

Sleeve scale

What do you understand by the following term as applied to micrometre screw gauge?

Thimble

What do you understand by the following term as applied to micrometre screw gauge?

Thimble scale

What do you understand by the following term as applied to micrometre screw gauge?

Baseline

What is the function of ratchet in the screw gauge?

What do you understand by the term least count of screw?

State the formula for calculating the pitch of screw.

State the formula for calculating the least count of screw.

What do you understand by the following term as applied to screw gauge?

Zero error

What do you understand by the following term as applied to screw gauge?

Positive zero error

What do you understand by the following term as applied to screw gauge?

Negative zero error

How do you account for positive zero error for calculating the correct diameter of wires?

How do you account for negative zero error, for calculating the correct diameter of wires?

Find the volume of a book of length 25 cm, breadth 18 cm and height 2 cm in m³.

The level of water in a measuring cylinder is 12.5 ml. When a stone is lowered in it, the volume is 21.0 ml. Find the volume of the stone.

A measuring cylinder is filled with water up to a level of 30 ml. A solid body is immersed in it so that the level of water rises to 37 ml. Now the solid body is tied with a cork and then immersed in water so that the water level rises to 40 ml. Find the volume of the solid body and the cork.