: In which process, the rate of transfer of heat is maximum a. Convection b. Radiation c. In all these, heat is transferred with the same velocity d. Conduction
: In which process, the rate of transfer of heat is maximum a. Convection b. Radiation c. In all these, heat is transferred with the same velocity d. Conduction
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9: In which process, the rate of transfer of heat is maximum
a.
Convection
b.
Radiation
c.
In all these, heat is transferred with the same velocity
d.
Conduction
10: A magnetic force acts on an electric charge in a magnetic field when
a.
the charge moves in the opposite direction to the magnetic field
b.
the charge is not moving
c.
the charge moves at right angles to the lines of the magnetic field
d.
the charge moves in the direction of the magnetic field
11: Torque produced in a current carrying loop will be minimum if angle between magnetic field and normal on the plane of loop is 90 ͦ
Select one:
True
False
12: Substance A has a higher specific heat than substance B. With all other factors equal, which requires the most energy to heat equal masses of A and B to the same temperature
a.
Answer depends on the density of each substance
b.
Substance A
c.
Both require the same amount of heat
d.
Substance B
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