Yield point may be defined as the point where
Yield point may be defined as the point where elastic behavior ends and plastic behavior begins. It is the commercial... View Article
Latest Posts
Which of the following is not a kind of potential energy?
Except, nuclear potential energy, rest all are different kinds of potential energy.
When does the potential energy of a spring increase?
It increases in both cases as long as there is a deformation, whether positive or negative.
The potential energy of a body at height h is mgh. Then its kinetic energy just before hitting the ground is
From the law of conservation of mechanical energy, the potential energy of a body at height h is converted into... View Article
Fusion takes place when
The change of state from solid to liquid is called fusion.
An increase in temperature in a liquid would cause a phase change to which of the following?
Increasing the temperature of liquid, increases the average K.E. of the molecules. The molecules start moving vigorously in all the... View Article
Which diagram is the best depiction of the direction of flow of diffusion?
Diffusion always takes place from high density area to low density area.
Water is used as a coolant in automobiles radiators because
Water is used as a coolant in automobiles radiators because it has high specific heat capacity. So, it absorbs a... View Article
A body of mass 1kg and 10kg are dropped simultaneously from the top of a tower. The ratio of the time taken by them to reach the ground is
1:1, the time taken does not depend on the mass of the falling object.
What is the dimensional formula of acceleration?
Acceleration is the change in velocity with respect to time, which can be represented as dv/dt. The factor d/dt represents... View Article
According to the law of calorimetry, which of the given relation is true? (A) Heat gained = Heat lost (B) There is no change in heat (C) There is only heat gain (D) There is only heat loss
Answer: (A) Heat gained = Heat lost What is calorimetry? The science of measuring the changes in the state variables... View Article
Water has maximum density at
The Density of Water can be defined as the weight of the water per its unit volume, which depends on the... View Article
The coefficient of linear expansion of a cubical crystal along three mutually perpendicular directions is α1 α2 and α3. What is the coefficient of cubical expansion of the crystal?
The coefficient of cubical expansion of the crystal will be α1 + α2 + α3
For a uniform circular motion _______
For a uniform circular motion, velocity is along the tangent, and acceleration is towards the centre of the circle. Explanation... View Article
The area of acceleration time graph indicates:
The Area of acceleration-time graphs indicate the average speed.
Two stones of different masses are thrown vertically upward with same initial velocity. Which one will rise to a greater height?
Both the stones will rise to the same height. It is because, for a body moving with given initial velocity... View Article
On acceleration-time graph the area under the curve equals the:
The area between the a-t graph and the time-axis gives the change in velocity.
Water contracts on heating between the temperatures
Water contracts on heating between the temperatures 0oC to 4oC due to its anomalous behaviour.
Which of the following relation implies Boyle’s law?
When temperature remains constant, the pressure and the volume of a quantity of gas is related as PV = constant.... View Article
Understanding the Motion of an Object Using Graph
An object is moving in positive direction till time t1, and then turns back with the same negative acceleration.
