Choose the wrong statement among followings
Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including vibration, sound, ultrasound and infrasound.
In which of the following situations no work is done?
The following is a diagram of a simple electromagnet.
Q. How could this electromagnet be made stronger?
A _________ jet travels faster than sound.
Why we sprinkle talcum powder on a carom board?
Look at the following picture carefully. First identify the picture. The below machine is a combination of two simple machines. Which simple machines combine to make it?
Electricity traveling through a wire is an example of
Rahul is applying force on a moving object in the same direction, the speed of the object:
When we throw a ball into the air, it falls back. The force responsible for this is:
In which of these activities, the sense of hearing is least important?
Two girls playing table tennis. First girl hit the ball over the net and at a Point say ‘T’, the other girl hit it back with a lot of force.
What would happen at point ‘T’?
1. The force caused a change in the size of the ball.
2. The force caused a change in the direction of the ball.
3. The force caused the ball to stop moving.
Air pressure is measured with a(n)
These products of nature are limited. Resources such as coal and oil are________________ , which means that when they are gone, nature cannot make them again. It is very important to limit their use and find other resources to replace them.
The _______________ works by using fuel derived from living and dead biological organisms.
Look at the lever below.
Q. Which object has the similar working principle as the above leves.
While walking, some or all of the following types of energy and work are involved:
What happens to the total energy of a moving object if all the applied forces are conserved?
Mark the action in which work is being done:
As defined in physics, work is done:
If the resultant force acting on a body of constant mass is zero, the body’s momentum is: