Infinite number of bodies, each of mass 2 kg are situated on x-axis at distance 1m, 2 m, 4 m, 8 m, respectively from the origin. The resulting gravitational potential due to this system at the origin will be
-G
The following four wires are made of the same material. Which of these will have the largest extension when the same tension is applied?
Length = 50 cm, diameter = 0.5 mm
Length = 100 cm, diameter = 1 mm
Length = 200 cm, diameter = 2 mm
Length = 200 cm, diameter = 2 mm
The wettability of a surface by a liquid depends primarily on
viscosity
surface tension
density
density
The molar specific heats of an ideal gas at constant pressure and volume are denoted by CP and CV respectively. If and R is the universal gas constant, then CV is equal to
The piece of iron is heated in a flame. If first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using,
Stefan's law
Wien's displacement law
Kirchoff's law
Kirchoff's law
A gas is taken through the cycle A → B → C → A, as shown, What is the net work done by the gas?
2000 J
1000 J
Zero
Zero
During an adiabatic process, the pressure of a gas found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas is
4/3
2
5/3
5/3
In the given (V-T )diagram, what is the relation between pressures p1 and p2?
p2 =p1
p2>p1
p2<p1
p2<p1
C.
p2<p1
The slope of the graph directly proportional to 1/p
The amount of heat energy required raising the temperature of 1g of helium at NTP, from T1K and T2K is
3/8 NaKB(T2-T1)
3/2 NaKB(T2-T1)
3/4 NaKB(T2-T1)
3/4 NaKB(T2-T1)
A wave travelling in the positive x- direction having displacement along y- direction as 1 m, wavelength 2π m and frequency of 1/π Hz is represented by
y = sin(x-2t)
y= sin (2πx-2πt)
y= sin (10πx-20πt)
y= sin (10πx-20πt)