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

What determines the direction of flow of electrons between two charged conductors kept in contact?

Which part of an electrical appliance is earthed?

State the conditions for the flow of charge in a circuit from one point to the other.

An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.

An electrical appliance is rated at 1000 KVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in: (i) kWh (ii) joule.

Three resistances, of which two are equal when connected in series have an effective resistance of 30 ohms. When the three resistances are connected in parallel, the effective resistances is 3 ohms. Find the values of the individual resistances.

An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?

State whether a magnetic field is associated or not around a current carrying conductor.

Which colour of white light is deviated most.

Which colour of white light is deviated at least?

Write approximate wavelength for (i) blue (ii) red light. Which colour has the higher speed in a vacuum? Which colour has the higher speed in the glass?

State and explain ‘Ampere’s Swimming Rule’ to determine the direction of magnetic field (or magnetic lines of force) around a current carrying conductor.

An imaginary material reflects red light, scatters green light, transmits blue light, and absorbs yellow, orange, and violet light. A cube of this material is shown in the given diagram.

The surface is illuminated with a beam of white light. What colour will this cube appear?
(i) from above,
(ii) from below and
(iii) from the sides?

Describe an experiment to show that there is a magnetic field around a current carrying conductor.

A block of glass is pushed into the path of the light as shown below. Then the converging point x will:

What does the direction of current convey?

At what frequency is the a.c. supplied to our houses?

By using a compass needle describe how can you demonstrate that there is a magnetic field around a current carrying conductor.

What is nucleus of an atom? Compare its size with that of the atom. Name its constituents. How is the number of these constituents determined by the atomic number and mass number of the atom?

What is the range of wavelength of the spectrum of white light nm?