Physics-
General
Easy
Question
The figure given below shows the cooling curve of pure wax material after heating. It cools from A to B and solidifies along BD. If L and C are respective values of latent heat and the specific heat of the liquid wax, the ratio L/C is
- 40
- 80
- 100
- 20
The correct answer is: 20
Let the quantity of heat supplied per minute be Q. Then quantity of heat supplied in 2 min
In 4 min, heat supplied
\ Þ
Related Questions to study
Physics-
The portion AB of the indicator diagram representing the state of matter denotes
The portion AB of the indicator diagram representing the state of matter denotes
Physics-General
Physics-
The graph shows the variation of temperature (T) of one kilogram of a material with the heat (H) supplied to it. At O, the substance is in the solid state. From the graph, we can conclude that
The graph shows the variation of temperature (T) of one kilogram of a material with the heat (H) supplied to it. At O, the substance is in the solid state. From the graph, we can conclude that
Physics-General
Physics-
The graph AB shown in figure is a plot of temperature of a body in degree celsius and degree Fahrenheit. Then
The graph AB shown in figure is a plot of temperature of a body in degree celsius and degree Fahrenheit. Then
Physics-General
Physics-
In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures and . The liquid columns in the two arms have heights and respectively. The coefficient of volume expansion of the liquid is equal to
In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures and . The liquid columns in the two arms have heights and respectively. The coefficient of volume expansion of the liquid is equal to
Physics-General
Physics-
A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. On heating the system
A cylindrical metal rod of length L0 is shaped into a ring with a small gap as shown. On heating the system
Physics-General
Physics-
A tank is filled upto a height h with a liquid and is placed on a platform of height h from the ground. To get maximum range a small hole is punched at a distance of y from the free surface of the liquid. Then
A tank is filled upto a height h with a liquid and is placed on a platform of height h from the ground. To get maximum range a small hole is punched at a distance of y from the free surface of the liquid. Then
Physics-General
Physics-
Water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column, i.e., the area of cross-section of the liquid column decreases as it moves down. Which of the following is the most accurate explanation for this
Water coming out of the mouth of a tap and falling vertically in streamline flow forms a tapering column, i.e., the area of cross-section of the liquid column decreases as it moves down. Which of the following is the most accurate explanation for this
Physics-General
Physics-
A cubical block of wood 10 cm on a side floats at the interface between oil and water with its lower surface horizontal and 4 cm below the interface. The density of oil is . The mass of block is
A cubical block of wood 10 cm on a side floats at the interface between oil and water with its lower surface horizontal and 4 cm below the interface. The density of oil is . The mass of block is
Physics-General
Physics-
Water flows through a frictionless duct with a cross-section varying as shown in fig. Pressure p at points along the axis is represented by
Water flows through a frictionless duct with a cross-section varying as shown in fig. Pressure p at points along the axis is represented by
Physics-General
Physics-
The diagram shows a cup of tea seen from above. The tea has been stirred and is now rotating without turbulence. A graph showing the speed v with which the liquid is crossing points at a distance X from O along a radius XO would look like
The diagram shows a cup of tea seen from above. The tea has been stirred and is now rotating without turbulence. A graph showing the speed v with which the liquid is crossing points at a distance X from O along a radius XO would look like
Physics-General
Physics-
A small spherical solid ball is dropped from a great height in a viscous liquid. Its journey in the liquid is best described in the diagram given below by the
A small spherical solid ball is dropped from a great height in a viscous liquid. Its journey in the liquid is best described in the diagram given below by the
Physics-General
Physics-
There are two identical small holes of area of cross-section a on the opposite sides of a tank containing a liquid of density . The difference in height between the holes is h. Tank is resting on a smooth horizontal surface. Horizontal force which will has to be applied on the tank to keep it in equilibrium is
There are two identical small holes of area of cross-section a on the opposite sides of a tank containing a liquid of density . The difference in height between the holes is h. Tank is resting on a smooth horizontal surface. Horizontal force which will has to be applied on the tank to keep it in equilibrium is
Physics-General
Physics-
A cylinder containing water up to a height of 25 cm has a hole of cross-section in its bottom. It is counterpoised in a balance. What is the initial change in the balancing weight when water begins to flow out
A cylinder containing water up to a height of 25 cm has a hole of cross-section in its bottom. It is counterpoised in a balance. What is the initial change in the balancing weight when water begins to flow out
Physics-General
Physics-
Water is filled in a cylindrical container to a height of 3m. The ratio of the cross-sectional area of the orifice and the beaker is 0.1. The square of the speed of the liquid coming out from the orifice is (g = 10 m/s2)
Water is filled in a cylindrical container to a height of 3m. The ratio of the cross-sectional area of the orifice and the beaker is 0.1. The square of the speed of the liquid coming out from the orifice is (g = 10 m/s2)
Physics-General
Physics-
A body floats in a liquid contained in a beaker. The whole system as shown falls freely under gravity. The upthrust on the body due to the liquid is
A body floats in a liquid contained in a beaker. The whole system as shown falls freely under gravity. The upthrust on the body due to the liquid is
Physics-General