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

State the factor that determine the quality of the note.

Name the characteristic of the sound affected due to a change in its wave form.

In what respect does the wave pattern of a noise and a music differ? Draw diagram to explain your answer.

Two sounds of same loudness and same pitch produced by two different instruments differ in their ______.

State two dis-similarities between a d.c. motor and an a.c. generator.

Shows the wave patterns of three sounds A, B and C. Name the characteristic of sound which is same between

1. A and B,
2. B and C, and
3. C and A.

A	B	C

A change in amplitude of a sound wave is noticed.

1. Which characteristic of sound is affected due to the above change?
2. How is amplitude related to your answer to part (a) above?
3. What happens to the quality of the sound?

Two notes are produced from two different musical instruments, such that they have same loudness and same pitch. The produced notes differ in their ______.

A current of 0.2 A flows through a wire whose ends are at a potential difference of 20 V. Calculate the resistance of the wire.

A current of 0.2 A flows through a wire whose ends are at a potential difference of 20 V. Calculate the heat energy produced in 1 minute.

Which particles are responsible for current in conductors?

Which coil of a step up transformer is made thicker and why?

Name the transformer used in the power transmitting station of a power plant.

What type of current is transmitted from the power station?

1 kWh = ________ J

At what frequency is AC supplied to residential houses?

What is consumed using different electrical appliances, for which electricity bills are paid?

Name two factors on which the magnitude of an induced e.m.f. in the secondary coil depends.

How is the e.m.f. across primary and secondary coils of a transformer related with the number of turns of the coil in them?

On which type of current do transformers work?