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1. The work done to raise a mass m from the surface of the earth to a height h. which is equal to the radius of the earth, is :

2. A cylindrical conductor of radius R is carrying a constant current. The plot of the magnitude of the magnetic field. B with the distance, d. from the centre of the conductor, is correctly represented by the figure :

3. Ionized hydrogen atoms and α-particles with same momenta enters perpendicular to a constant magnetic field. B. The ratio of their radii of their paths rH:ra will be :

4. The displacement of a particle executing simple harmonic motion is given by

y=A0+Asinωt+Bcosωt

Then the amplitude of its oscillation is given by:

5. Pick the wrong answer in the context with rainbow.

6. A soap bubble, having radius of 1 mm. is blown from a detergent solution having a surface tension of 2.5×10−2 N/m. The pressure inside the bubble 8. equals at a point Z0 below the free surface of water in a container. Taking g=10 m/s2, density of water = 103 kg/m3,the value of Z0 is :

7. In an experiment, the percentage oferror occurred in the measurement of physical quantities A. B. C and D are 1%. 2%. 3% and 4% respectively. Then the maximum percentage of error in the measurement X, where X = A2B1/2C1/3D3, will be

8. A force F = 20 + 10y action a particle in y-direction where F is in newton and y in meter. Work done by this force to move the particle from y = 0 to y = 1 m is :

9. Average velocity of a particle executing SHM in one complete vibration is :

10. The unit of thermal conductivity is :

Questions from Gravitation

1. A satellite in a circular orbit of radius R has a period of 4 hour. Another satellite with orbital radius 3R around the,same planet will have a period (in hours)

Answer 2

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