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

A vibrating tuning fork is placed over the mouth of a burette filled with water. The tap is opened and the water level gradually falls. It is observed that the sound becomes the loudest for a particular length of the air column. What is the name of the phenomenon taking place when this happens? Why does the sound become the loudest?

When a tuning fork, struck by a rubber pad, is held over a length of the air column in a tube, it produces a loud sound for a fixed length of the air column. Name the above phenomenon. How does the frequency of the loud sound compare with that of the tuning fork? State the unit for measuring loudness.

Explain a person walking past a railway line, in the middle of night hears a ringing sound along with the sound of his footsteps.

A string stretched between its ends is made to vibrate by placing the stem of a vibrating tuning fork at its one end. State three ways how you will increase the frequency of note produced by the string.

Explain Why are stringed musical instruments provided with large sound boxes?

What do you understand by free (or natural) vibrations?

What do you understand by forced vibrations?

What are the factors that affect the frequency of a vibrating string and how do they affect the frequency?

What do you understand by free vibrations of a body? Draw a displacement-time graph to represent them. Given one example.

Explain free and forced vibrations. Give an experimental arrangement to illustrate the phenomenon of resonance.

Describe a simple experiment to illustrate the phenomenon of resonance and explain it.

A mixture of radioactive substance gives off three types of radiation name the radiations which are charged.

A mixture of radioactive substance gives off three types of radiation name the radiation similar in nature to cathode rays.

A mixture of radioactive substance gives off three types of radiation name the radiation which is deviated most in a magnetic field.

Answer the question with respect to the following diagram: 

Name the charged particles emitted from the heated filament? Name the phenomenon of emission of these particles.

Answer the question with respect to the following diagram:

A beam of such particles, after acceleration is allowed to strike a metal plate C. Radiation B is given off. Name the radiation B.

Answer the question with respect to the following diagram:

Name the material of target C.

Answer the question with respect to the following diagram:

State two properties of radiation B different from those of visible light.

Answer the question with respect to the following diagram:

State two factors on which the wavelength of radiation B depends.

Answer the question with respect to the following diagram:

State two uses of radiation B.