ICSE ICSE Class 8 - CISCE Question Bank Solutions for Physics

Figure shows two jars A and B containing water up to different heights. Which will produce sound of higher pitch when air is blown on them?

Fuse wire is an alloy of

A fuse wire should have

Two identical guitars are played by two persons to give notes of the same loudness and pitch. Will they differ in quality? Give reason for your answer.

Two musical notes of the same pitch and same loudness are played on two different instruments. Their wave patterns are as shown in figure.

How do they differ in
(a) loudness,
(b) pitch and
(c) quality

When the switch of an electric appliance is put off, it disconnects

State the factors that determine
(a) the pitch of a note.
(b) the loudness of the sound heard.
(c) the quality of the note.

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

(a) amplitude (b) waveform (c) frequency.

Figure shows four waves A, B, C, and D

Name the wave which shows
(a) a note from a musical instrument,
(b) a soft note
(c) a shrill note.

How is the pitch of sound in a guitar changed if (a) thin wire is used, (b) wire under less tension is used?

Two waves of the same pitch have amplitudes in the ratio 1 : 3 What will be the ratio of their

1. loudness,
2. pitch?

Two waves have frequencies 256 Hz and 512 Hz, but same amplitude. Compare their (i) loudness, and (ii) pitch

State one property of the material of a fuse wire.

Name the material of a fuse wire.

Can we use copper wire as a fuse wire? Give reason.

How does a fuse protect the electric wiring (or an appliance) from being damaged?

Which fuse wire is thick: 5 A or 15 A?

With which wire: live or neutral is the fuse wire connected?

What do you mean by short-circuiting of a circuit?

State the colour coding of the three wires in a cable used for