ICSE ICSE Class 8 - CISCE Question Bank Solutions for Physics

What is a submarine? How can it be made to dive in water and come to the surface of water?

State one way to decrease the moment of a given force about a given axis of rotation.

What do you mean by the clockwise and anti-clockwise moment of force?

The steering wheel of a vehicle is of large diameter.

The hand flour grinder is provided with a handle near the rim.

It is easier to open the door by pushing it at its free end.

A potter turns his wheel by applying a force through the stick near the rim of wheel.

The density of aluminium is 2.7 g cm³. Express it in kg m⁻³.

What is thrust?

On what factors does the effect of thrust on a surface depend?

The density of alcohol is 600 kg m^-3. Express it in g Cm^-3.

A piece of zinc of mass 438.6 g has a volume of 86 cm³. Calculate the density of zinc.

A piece of wood of mass 150 g has a volume of 200 Cm³. Find the density of wood in C.GS. unit and S.I. unit.

Calculate the volume of wood of mass 6000 kg if the density of wood is 0.8 g Cm^-3

Sleepers are used below the rails.

A tall building has wide foundations.

Calculate the density of solid from the following data :
(a) Mass of solid = 72 g
(b) Initial volume of water in measuring cylinder = 24 ml
(c) Final volume of water when solid is completely immersed in water = 42 ml

The mass of an empty density bottle is 21.8 g when filled completely with water is 41.8 g and when filled completely with liquid it is 40.6 g. Find

1. the volume of density bottle.
2. the relative density of liquid.

From the following observations, calculate the density and relative density of a brine solution.

Mass of empty density bottle = 22 g

Mass of bottle + water = 50 g

Mass of bottle + brine solution = 54 g

The mass of an empty density bottle is 30 g, it is 75 g when filled completely with water and 65 g when filled completely with a liquid. Find volume of density bottle.