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

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.

A spaceship is moving in space with a velocity of 60 kms⁻¹. It fires its retro engines for 20 seconds and velocity is reduced to 55 kms⁻¹. Calculate the distance travelled by a spaceship in 40 s, from the time of firing of the retro- rockets.

Suggest the best particles in the use of energy at school.

The Wavelength of a particular colour is 5400Å. Express it in nanometer and metre.

Explain the term least count of a screw gauge. How are they determined?

What is the backlash error?

How the backlash error is avoided?