A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?
conduction and convection only
conduction and radiation only
convection and radiation only
conduction, convection and radiation
Correct Answer :
D. conduction, convection and radiation
Related Questions
The first Indian Satellite launched from a Russian Cosmodrome on April 16, 1975 was named
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Insat I-A
Aryabhatta
SLV-l
A projectile is fired at an angle with the horizontal with a small velocity. Its horizontal range will be maximum when the angle with the horizontal is
0°
30°
45°
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decreases
remains unchanged
first decreases then increases
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Boyle's law
Hooke's law
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there is no change in volume
there is no change in temperature
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there is no change of state
When a charged rod is brought near a collection of small pith balls, the balls
will jump rapidly up and down for a short time
will remain unaffected
Both (a) and (b) above
It will produce electric shock
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less
equal
can't be determined
The device that is used to measure the electromotive force of a cell is
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a nearly vertical position with its South Pole downwards
a nearly vertical position with its North Pole downwards
a slanting position
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neutrons
electrons
phonons
photons
A rod of brass is held in hand and rubbed with fur. The rod is found to have
no charge
positive charge
negative charge
can't be said
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rough white
rough black
shining white
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A) Troposphere
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C) Stratosphere
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ACBD
ABCD
CABD
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surface tension
capillarity
viscosity
diffusion
Two tumblers stuck together can be separated by
pouring ice cold water into the inner tumbler
pouring ice cold water on the outer tumbler
pouring hot water into the inner tumbler
dipping both the tumblers in hot water
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mercury thermometers
alcohol thermometers
platinum resistance thermometers
thermoelectric thermometers
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greater than
equal to
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effusion
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at right angles to the direction of the vibrations of the vibrating body
Both (a) and (b) above
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historical sites
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sound
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sudden change in the direction of the wind
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cohesion
surface tension
capillarity
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Pascal's law
Principle of Archimedes
Boyle's law
Hooke's law
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ultraviolet rays from the sun
gamma rays from radioactive minerals
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Jupiter
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the eye lens being thick
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the pupil being very small
The Cact that the compass needle does not point true north was observed first by
Sir Isaac Newton
Columbus
Archimedes
Thomas Alva Edison