103/21

10. Identify the weakest force.
A) Weak nuclear force B) Strong nuclear force

C) Electromagnetic force D) Gravitational force

11. A particle is executing simple harmonic motion. What fraction of the total energy is
kinetic, if the displacement is 1/2 the amplitude ?

A) 1/2 B) 0 C) 1/8 D) 3/4

12. Which among the following is not the unit of time ?
A) Parsec B) Millisecond
C) Lunar month D) Solar day

13. Which factor determines the difference between isothermal and adiabatic elasticity ?
Ratio of velocities B) Ratio of densities

A)
C) Ratio of specific heats D) Ratio of pressures

14. Most probable position of a particle in a box for n = 1 state is at
A) x=0 8) x=L/4 C) x=L/2 D) x=3/4L

15. How much energy is required to knock out an electron from the innermost orbit ?
A) 13.6/2 eV B) 13.6 eV C) 27.2 eV D) 0

16. Which observation led to the discovery of deuterium by Harold Urey in 1932 ?
A) Difference in mass
B) Difference in wavelength
C) Difference in field effect
)

D) Difference in magnetic properties

17. Two charges ‘4e’ and ‘e’ are separated by a distance ‘a’. Where a third charge ‘q’
should be placed to keep the equilibrium ?

A) a/3 frome B) a/2 from e C) a/4 frome D) ate

18. Identify the quark having greatest rest mass.
A) Strange B) Up C) Down D) Bottom