The variation of susceptibility (χ) with absolute temperature (T) for a paramagnetic material is represented as:
1. 2.
3. 4.
 58%
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A bullet of mass m hits a stationary block of mass M elastically. The transfer of energy is the maximum, when:
1. M=m
2. M=2m
3. Mm
4. Mm
Subtopic:  Collisions |
 57%
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The ground state energy of a hydrogen atom is 13.6 eV. The energy needed to ionize the hydrogen atom from its second excited state will be:
1. 13.6 eV
2. 6.8 eV
3. 1.51 eV
4. 3.4 eV
Subtopic:  Bohr's Model of Atom |
 63%
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The escape velocity of a body on the earth's surface is 11.2 km/s. If the same body is projected upward with a velocity 22.4 km/s, the velocity of this body at an infinite distance from the centre of the earth will be:
1. 11.22 km/s  2. zero
3. 11.2 km/s  4. 11.23 km/s 
Subtopic:  Escape velocity |
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A lens is made up of 3 different transparent media as shown in the figure. A point object O is placed on its axis beyond 2f. How many real images will be obtained on the other side?
        
1. 2
2. 1
3. No image will be formed
4. 3
Subtopic:  Lenses |
 66%
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The diameter of a spherical bob, when measured with vernier callipers yielded the values: 3.33 cm, 3.32 cm, 3.34 cm, 3.33 cm and 3.32 cm. The mean diameter to appropriate significant figures is:
1. 3.328 cm
2. 3.3 cm
3. 3.33 cm
4. 3.32 cm
Subtopic:  Measurement & Measuring Devices |
 59%
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On the basis of electrical conductivity, which one of the following material has the smallest resistivity?
1. Germanium 
2. Silver
3. Glass
4. Silicon 
Subtopic:  Derivation of Ohm's Law |
 65%
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The mechanical quantity, which has dimensions of reciprocal of mass (M1), is:
1. angular momentum
2. coefficient of thermal conductivity 
3. torque 
4. gravitational constant 
Subtopic:  Dimensions |
 60%
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The position of a particle is given by; r(t)=4ti^+2t2j^+5k^, where t is in seconds and r in metres. Find the magnitude and direction of the velocity v(t), at t=1 s, with respect to the x-axis.
1. 42 ms1,45
2. 42 ms1,60
3. 32 ms1,30
4. 32 ms1,45
Subtopic:  Speed & Velocity |
 81%
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For the given cycle, the work done during the isobaric process is:

            
1. 200 J
2. zero
3. 400 J
4. 600
Subtopic:  Work Done by a Gas |
 56%
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