# The period of revolution of Jupiter around the sun is 12 times the period of revolution of the earth around the sun. The distance between the Jupiter and sun is n times the distance between the earth and sun. Then the value of n is:

1.  (144)3/2

2.  (144)2/3

3.  ∛144

4.  ∜144

4

&#8731;144

Explanation :
No Explanation available for this question

# A mass M is suspended from a light spring. An additional mass m is added, displaces the spring further by a distance 'x'. Now the combined mass will oscillate with a period:

1.  T=2π√(mg/(x(M+m)))

2.  T=2π√(((M+m)x)/mg)

3.  T=2π/3 √(mg/((M+m)x))

4.  T=2π√(((M+m))/mgx)

4

T=2&#960;&#8730;(((M+m)x)/mg)

Explanation :
No Explanation available for this question

# A 4.0 m long copper wire of cross-sectional area 1.2 cm2 is stretched by a force of 4.8 x 103 N. If Young's modulus for copper is Y= 1.2 x 1011 N/m2, the increase in length in wire and strain energy stored per unit volume are:

1.  1.32 x 10-4 m, 66 x 103 J

2.  132 x 10-4 m, 66 x 102 J

3.  13.2 x 10-4 m, 6.6 x 103 J

4.  0.132 x 10-4 m, 66 x 104 J

4

13.2 x 10<sup>-4</sup> m, 6.6 x 10<sup>3</sup> J

Explanation :
No Explanation available for this question

# A spherical liquid drop of diameter D breaks up to n identical spherical drops. If the surface tension of the liquid is 'σ', the change in energy in this process is:

1.  πσD2 (n1/3-1)

2.  πσD2 (n2/3-1)

3.  πσD2 (n-1)

4.  πσD2 (n4/3-1)

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&#960;&#963;D<sup>2</sup><sub> </sub>(n<sup>1/3</sup>-1)

Explanation :
No Explanation available for this question

# A tank of height 5 m is full of water. There is a hole of cross-sectional area 1 cm2 in its bottom. The volume of water that will come out from this hole per second is (g = 10 m/s2):

1.  10-3 m3/s

2.  10-4 m3/s

3.  10 m3/s

4.  10-2 m3/s

4

10<sup>-3</sup> m<sup>3</sup>/s

Explanation :
No Explanation available for this question

# The pressure P for a gas is plotted against its absolute temperature T for two different volumes V1 and V2where V1>V2. If P is plotted on y-axis and T on x-axis, then:

1.   The curve for V1 has greater slope then that for V2

2.  The curve for V2 has greater slope then that for V1

3.  Both curves have same slope

4.  The curves intersect at some point other than T = 0

4

The curve for V2 has greater slope then that for V1

Explanation :
No Explanation available for this question

# One mole of an ideal gas (γ = 1.4) is adiabatically compressed so that its temperature rises from 270C to 350C. The change in the internal energy of the gas is (R = 8.3 J.mol-1K-1):

1.  -266 J

2.  166 J

3.  -268 J

4.  168 J

4

166 J

Explanation :
No Explanation available for this question

# A lead bullet of unknown mass is fired with a speed of 180 ms-1 into a tree in which it stops. Assuming that in this process two third of heat produced goes into the bullet and one third into wood. The temperature of the bullet raises by:(Specific heat of lead = 0.120 Jg-1 0C-1)

1.  1400C

2.  1060C

3.  900C

4.  1000C

4

90<sup>0</sup>C

Explanation :
No Explanation available for this question

# A cylinder of radius 'R' made of material of coefficient of thermal conductivity 'K1' is surrounded by a cylinder shell of inner radius 'R' and outer radius 2R made of a material of coefficient of thermal conductivity K2. The two ends of the combined system are maintained at two different temperatures. There is no loss of heat across the cylinder surface and the system is in the steady state. The effective coefficient of thermal conductivity of the system is:

1.  k1+k2

2.  k1+3k2 /4

3.  3k1+k2/4

4.  k1k2/k1+k2

4

k<sub>1</sub>+3k<sub>2</sub> /4

Explanation :
No Explanation available for this question

1.  70 cm

2.  55 cm

3.  40 cm

4.  60 cm

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