(English Medium) ICSE Class 10 - CISCE Question Bank Solutions

What is meant by earthing of an electrical appliance? Why is it essential?

In a three-pin plug top, one of the pins is thicker and longer than the other two, Give reason. Name this pin.

A mixture of radioactive substances gives off three types of radiation name the radiation which has the highest ionizing power.

A mixture of radioactive substance gives off three types of radiation name the radiation which has the highest ionizing power.

A mixture of radioactive substance gives off three types of radiation name the radiation which when becomes neutral, become the atom of rare gas.

What is prism?

The nuclear radiation which gets deflected towards the negatively charged plate in an electric field is ______.

Name a single pulley in which displacement of load and effort is not the same.

When this triangular lamina is suspended freely from any one vertex, what is the moment of force produced by its own weight in its rest position?

What is the advantage of using a block and tackle system over a single movable pulley?

A hollow ice cream cone has height 6 cm.

1. Where is the position of its center of gravity from the broad base?
2. Will its position change when it is filled completely with honey? Write Yes or No.

How does the angle of minimum deviation produced by a prism change with increase in

1. the wavelength of incident light, and
2. the refracting angle of prism?

A lens forms an upright and magnified image of an object. Draw a labelled ray diagram to show the image formation.

Why should a connection wire be thick?

A radioactive source emits three type of radiations. Give the charge and mass of particles composing the alpha radiations.

A radioactive source emits three type of radiations.

When the alpha particle becomes neutral, it is found to be the atom of a rare gas. Name this rare gas and draw a model of its neutral atom.

How does uniform circular motion differ from uniform linear motion?

Name the phenomenon involved in tunning a radio set to a particular station.

Define the resonance phenomenon.

In the diagram below, A, B, C, D are four pendulums suspended from the same elastic string PQ. The lengths of A and C are equal to each other, while the length of pendulum B is smaller than that of D. Pendulum A is set into a mode of vibrations.

1. Name the type of vibrations taking place in pendulums B and D.
2. What is the state of pendulum C?
3. State the reason for the type of vibrations in pendulums B and C.