Physics-
General
Easy
Question
Heat can transfer through vacuum by means of ....
- Radiation
- Conduction
- Convection
- All
The correct answer is: Radiation
Related Questions to study
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One kilo calorie = .................... Calories.
One kilo calorie = .................... Calories.
Physics-General
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If a faulty thermometer reads the melting point of ice as –10°C and it reads 60°C in place of 50°C, the temperature of boiling point of water on this scale is ...
If a faulty thermometer reads the melting point of ice as –10°C and it reads 60°C in place of 50°C, the temperature of boiling point of water on this scale is ...
Physics-General
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The upper and lower fixed points of a faulty mercury thermometer are 210°F and 34°F respectively Which would be correct?
The upper and lower fixed points of a faulty mercury thermometer are 210°F and 34°F respectively Which would be correct?
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Convert 127K into celsius scale.
Convert 127K into celsius scale.
Physics-General
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A difference of temperature of 45°C is equivalent to a difference of..
A difference of temperature of 45°C is equivalent to a difference of..
Physics-General
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Which of the following is the incorrect graph for a sphere falling in a viscous liquid? (Given at t = 0, velocity v = 0 and displacement x = 0.)
Which of the following is the incorrect graph for a sphere falling in a viscous liquid? (Given at t = 0, velocity v = 0 and displacement x = 0.)
physics-General
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A cubical block of side ‘a’ and density ‘
’ slides over a fixed inclined plane with constant velocity ‘v’. There is a thin film of viscous fluid of thickness ‘t’ between the plane and the block. Then the coefficient of viscosity of the thin film will be:
A cubical block of side ‘a’ and density ‘’ slides over a fixed inclined plane with constant velocity ‘v’. There is a thin film of viscous fluid of thickness ‘t’ between the plane and the block. Then the coefficient of viscosity of the thin film will be:
physics-General
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Equal volumes of two immiscible liquids of densities r and 2r are filled in a vessel as shown in figure. Two small holes are punched at depth h/ 2 and 3h/2 from the surface of lighter liquid. If 
are the velocities of a flux at these two holes, then 
Equal volumes of two immiscible liquids of densities r and 2r are filled in a vessel as shown in figure. Two small holes are punched at depth h/ 2 and 3h/2 from the surface of lighter liquid. If are the velocities of a flux at these two holes, then
physics-General
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In a cylindrical vessel containing liquid of density , there are two holes in the side walls at heights of 
respectively such that the range of efflux at the bottom of the vessel is same. The height of a hole, for which the range of efflux would be maximum, will be
In a cylindrical vessel containing liquid of density , there are two holes in the side walls at heights of respectively such that the range of efflux at the bottom of the vessel is same. The height of a hole, for which the range of efflux would be maximum, will be
physics-General
physics-
In the case of a fluid, Bernoulli's theorem expresses the application of the principle of conservation of :
In the case of a fluid, Bernoulli's theorem expresses the application of the principle of conservation of :
physics-General
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Water is flowing steadily through a horizontal tube of non uniform cross-section. If the pressure of water 
at a point where cross-section is 
and velocity of flow is 2 m/s, what is pressure at a point where cross-section reduces to 
Water is flowing steadily through a horizontal tube of non uniform cross-section. If the pressure of water at a point where cross-section is and velocity of flow is 2 m/s, what is pressure at a point where cross-section reduces to
physics-General
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There is a metal cube inside a block of ice which is floating on the surface of water. The ice melts completely and metal falls in the water. Water level in the container
There is a metal cube inside a block of ice which is floating on the surface of water. The ice melts completely and metal falls in the water. Water level in the container
physics-General
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A body having volume V and density is attached to the bottom of a container as shown. Density of the liquid is d 
. Container has a constant upward acceleration a. Tension in the string is
A body having volume V and density is attached to the bottom of a container as shown. Density of the liquid is d . Container has a constant upward acceleration a. Tension in the string is
physics-General
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The temperature at which the fahrenheit scale reading is equal to twice celsius scale reading is ....
The temperature at which the fahrenheit scale reading is equal to twice celsius scale reading is ....
physics-General
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A block of mass 15 kg is resting on a rough inclined plane. The block is tied by a horizontal string which has a tension of 50 N. The coefficient of friction between the surfaces of contact is..
A block of mass 15 kg is resting on a rough inclined plane. The block is tied by a horizontal string which has a tension of 50 N. The coefficient of friction between the surfaces of contact is..
physics-General
