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

Give one example of dynamic equilibrium.

The distance between two bodies is doubled. How is the magnitude of the gravitational force between them affected?

A uniform half meter rule balances horizontally on a knife-edge at 29 cm mark when a weight of 20 gf is suspended from one end

1) Draw a diagram of the arrangement

2) What is the weight of the half meter rule?

A lens forms an upright and diminished image of an object when the object is placed at its focal point. Name the lens and draw a ray diagram to show the image formation.

To which wire of a cable in a power circuit should the metal case of the geyser be connected?

Give an example of a non-contact force which is always of attractive nature

On what factor does the position of the center of gravity of a body depend?

Explain the motion of a planet around the Sun in a circular path.

What is the weight of a body placed at the centre of the earth?

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

An electric iron is rated 220V, 2kW.

1) if the iron is used for 2h daily find the cost of running it for one week if it costs 4.25 per kWh

2) Why is the fuse absolutely necessary in a power circuit?

State a factor on which the position of the centre of gravity of a body depend? Explain your answer with an example.

What is the position of the centre of gravity of a rectangular lamina?

What is the position of the centre of gravity of a cylinder?

At which point is the centre of gravity situated in a triangular lamina?

At which point is the centre of gravity situated in a circular lamina?

Where is the centre of gravity of a uniform ring situated?

A square cardboard is suspended by passing a pin through a narrow hole at its one corner. Draw a diagram to show its rest position. In the diagram, mark the point of suspension by the letter S and the centre of gravity by the letter G.

Explain how you will determine experimentally the position of the centre of gravity for a triangular lamina (or a triangular piece of cardboard).

'The position of the centre of gravity of a body remains unchanged even when the body is deformed'.