CBSE Class 9

CBSE Class 9 English
CBSE Class 9 Social
CBSE Class 9 Science

About the CBSE Class 9 category [CBSE Class 9] (1)
State four differences between longitudinal and transverse waves. Give an example of each [CBSE Class 9 Science] (2)
Figure shows a conveyor belt transporting a package to a raised platform. The belt is driven by a motor [CBSE Class 9 Science] (1)
A car of mass 900 kg is travelling at a steady speed of 30 m/s against a resistive force of 2000 N, as illustrated in figure [CBSE Class 9 Science] (1)
Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it [CBSE Class 9 Science] (1)
A light and a heavy object have the same momentum, find out the ratio of their kinetic energies. Which one has a larger kinetic energy [CBSE Class 9 Science] (1)
Show that when a body is dropped from a certain height, the sum of its kinetic energy at any instant during its fall is constant [CBSE Class 9 Science] (1)
Briefly describing the gravitational potential energy [CBSE Class 9 Science] (1)
A body thrown at a certain angle to the ground moves in a curved path and falls back to the ground [CBSE Class 9 Science] (1)
Two workmen are employed on a building project, as shown in figure [CBSE Class 9 Science] (1)
Figure shows, in order, five stages of an athlete successfully performing a pole-vault [CBSE Class 9 Science] (1)
Give one example of each of the following: Small mass but high kinetic energy [CBSE Class 9 Science] (1)
A cube of side 5 cm is immersed in water and then in saturated salt solution. In which case will it experience a greater buoyant force [CBSE Class 9 Science] (1)
The velocity of a body moving in a straight line is increased by applying a constant force [CBSE Class 9 Science] (1)
Explain, with the help of an example the difference between the terms thrust and pressure. Which one of the two has same SI unit as that of Forc [CBSE Class 9 Science] (1)
Avinash can run at a speed of 8 ms-1 against the frictional force of 10 N, and Kapil can move at a speed of 3 ms-1 against the frictional force of 25 N. Who is more powerful and why? [CBSE Class 9 Science] (1)
A rocket is moving up with a velocity v. If the velocity of this rocket is suddenly tripled, what will be the ratio of two kinetic energies? [CBSE Class 9 Science] (1)
State and explain the experiment for verification of Archimedes’ principle. Name the devices based on Archimedes’ principle [CBSE Class 9 Science] (1)
Derive an expression for kinetic energy of an object [CBSE Class 9 Science] (1)
What types of energy transformation takes place in the following: [CBSE Class 9 Science] (1)
Loaded test-tube placed in pure milk sinks to a certain mark (M) [CBSE Class 9 Science] (1)
Give three examples when the object is not displaced in spite of a force acting on it [CBSE Class 9 Science] (1)
How is a submarine able to move on as well as go under water? [CBSE Class 9 Science] (1)
Give any three applications of Archimedes’ principle [CBSE Class 9 Science] (1)
Observe the diagrams I and II carefully [CBSE Class 9 Science] (1)
State the factors on which buoyant force depends [CBSE Class 9 Science] (1)
State the laws of liquid pressure [CBSE Class 9 Science] (1)
What is power? How do you differentiate kilowatt from kilowatt hour? [CBSE Class 9 Science] (1)
What are the factors which affect the pressure at a point in liquid? [CBSE Class 9 Science] (1)
Give an application of density. What are its units? [CBSE Class 9 Science] (1)