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

State the laws of reflection.

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The wavelength is the linear distance between the:

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The number of oscillations passing through a point in unit time is called:

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The SI unit of frequency is

Why do astronauts talk to each other through radio telephone in space?

Define the term wavelength.

State four differences between the sound wave and the light wave.

What is meant by the term wave motion?

A charge of 5000 C flows through an electric circuit in 2 hours and 30 minutes. Calculate the magnitude of current in a circuit.

A battery can supply a charge of 25 × 10⁴ C. If the current is drawn from battery at the rate of 2.5 A, calculate the time in which battery will discharge completely.

A dry cell can supply a charge of 800 C. If continuous current of 8.0 mA is drawn, calculate the time in which cells will discharge completely.

What do you understand by the closed electric circuit

What do you understand by the open electric circuit?

Draw a neat diagram showing a closed electric circuit.

Draw a neat diagram showing a open electric circuit.

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A bar magnet is rubbed on a bar of steel along its length 20 times. The bar of steel gets magnetised due to the process of:

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The magnetic strength of a bar magnet is:

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Nickel is a:

What do you meant by the term pole of a magnet? Magnetically speaking, what is the difference between a piece of brass, a piece of soft iron, and a piece of lode- stone?

Define the Isogonic line.