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

In fig. shows a snap shot of a wave from of frequency 50 Hz in a string. The numbers in the diagram represents distance in centimeters. Fpr the wave motion, find
(a) Wavelength,
(b) Amplitude,
(c) Velocity.

What change do you expect in the characteristics of a musical sound if
(i) Its frequency is increased,
(ii) Its amplitude is increased?

In fig. 2 two musical notes of the same pitch and same loudness are played on a violin and on a piano. Their wave forms are as shown in the diagram below. Explain why the wave patterns are different.

State the condition when on applying a force, the body has the translational motion.

A body is acted upon by two forces of magnitude F, but in opposite directions. State the effect of the force if the two forces act at two different points of the body at a separation r.

How is horse power related to the S. I. unit of power?

A canon ball of mass 500g is fired with a speed of 15m/s^-1. Find: its momentum.

A body of mass 60 kg has the momentum 3000 kgm/s^-1. Calculate:  the speed of the body.

How much energy is gained by a box of mass 20 kg when a man, runs carrying the box with a speed of 3 m/s^-1 to catch the bus?

Stat the principle of an ideal machine.

Shows a lemon crusher.

1. In the diagram, mark the position of the fulcrum F and the line of action of load L and effort E.
2. Name the class of lever

Complete the following sentence :

Mechanical advantage = ___________ × velocity ratio

Complete the following sentence :

A scissors is a ___________ multiplier.