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

Fig shows a three pin plug top. Label the three pins. Why is the top pin thicker and longer than the other two? Why are the pins splitted at the ends?

Which of the radiations α, β and γ is similar to a beam of electrons?

A uniform metre rule of mass 100g is balanced on a fulcrum at mark 40cm by suspending an unknown mass m at the mark 20cm.

To which side the rule will tilt if the mass m is moved to the mark 10cm ?

Can a concave lens form an image of size two times that of the object? Give reason.

On keeping the stem of a vibrating tuning fork on the surface of a table, a loud sound is heard. Give reason.

The diagram below shows three different modes of vibration P, Q and R of the same string of a given length.

P	Q	R

1. Which vibration will produce a louder sound and why?
2. Which vibration will produce sound of maximum shrillness (or pitch) and why?
3. What is the ratio of wavelength of vibrations P and R?

Name one device that uses an electromagnet.

A radioactive source emits three types of radiations.

Name the radiation consisting of the same kind of particles as the cathode rays.

The radiation suffering the maximum deflection in a magnetic field is ______.

Which of the following remains constant in a uniform circular motion, Speed or Velocity, or both?

Name the force required for uniform circular motion. State its direction.

Define Uniform circular motion.

Is it possible to have an accelerated motion with a constant speed? Explain.

Name the markings of a three-pin plug. Give the colour codes of the connecting leads.

State the purpose served by the terminals of a three pin plug.

Give the role of each of the three terminals of a three way pin plug.

Draw diagram of a three pin socket outlet and state the connections made to them.

Draw a diagram of a three pin plug top. Mark the pins used for live, neutral and earth connections as L, N and E respectively. To which part of the appliance is the pin marked as E connected. To which line L or N is the fuse connected?

Draw a labelled diagram with necessary switch, regulator etc. to connect a bulb, a plug socket outlet and a fan with the mains. In what arrangement have you connected these to the mains?