2nd Year Physics First half Book Paper

Q1. Multiple choice questions (Attempt all · 17 × 1 = 17)

1. Unit of capacitive reactance is:
   1. Ohm
   2. Farad
   3. Henry
   4. Tesla
2. Statistical mechanics connects microscopic details with:
   1. Microscopic observables only
   2. Macroscopic observables only
   3. Both microscopic and macroscopic observables
   4. None of these
3. Artificial satellites are used for:
   1. Communication
   2. Military operations
   3. Scientific research
   4. All of the above
4. Which material should be inserted between the plates of a capacitor in order to increase its capacitance?
   1. mica
   2. copper
   3. ron
   4. tin
5. When P.E of the spring is maximum for a spring mass system:
   1. K.E of mass is zero
   2. K.E of mass becomes infinite
   3. K.E of mass is maximum
   4. none of these
6. Intensity of light depends upon:
   1. Wavelength
   2. Amplitude
   3. Velocity
   4. Frequency
7. The angle between current and voltage in a resistor is:
   1. 90°
   2. 180°
   3. 0°
   4. 45°
8. The rms speed of gas molecules depends on:
   1. Temperature only
   2. Molar mass only
   3. Both temperature and molar mass
   4. Pressure only
9. The first artificial satellite launched in 1957 was:
   1. Apollo 11
   2. Voyager 1
   3. Sputnik 1
   4. Explorer 1
10. If charged body is moved against the electric field, it will gain:
    1. P.E
    2. K.E
    3. mechanical energy
    4. electrical potential energy
11. A mass attached to a spring completes 60 vibrations in half minute. Its frequency is:
    1. 120 Hertz
    2. 60 Hertz
    3. 30 Hertz
    4. 2 Hertz
12. What is a key criticism of the Many-Worlds interpretation?
    1. It relies on the collapse of the wave function.
    2. It denies the existence of superposition.
    3. It contradicts classical physics entirely.
    4. It is difficult to test experimentally.
13. The unit of self-inductance is:
    1. Ohm
    2. Farad
    3. Henry
    4. Henry
14. Average velocity of molecules in a gas:
    1. zero
    2. positive
    3. negative
    4. infinity
15. If medium between the masses is changed by a conductor then the gravitational force will
    1. increase
    2. decrease
    3. remain constant
    4. become zero
16. In series combination of capacitors, the reciprocal of the equivalent capacitance is equal to:
    1. Sum of the capacitances
    2. Sum of the reciprocals of the capacitances
    3. Product of capacitances
    4. Difference of capacitances
17. If mass attached to a spring is made four times, the time period becomes:
    1. Doubled
    2. One half
    3. Remains same
    4. Four times