1st Year Physics 2nd Quarter Book Paper

Q1. Multiple choice questions (Attempt all · 12 × 1 = 12)

1. The equation of continuity is based on the law of:
   1. Conservation of momentum
   2. Conservation of mass
   3. Conservation of energy
   4. Conservation of velocity
2. Ideal gas molecules exert force on each other only during:
   1. Free expansion
   2. Collision
   3. Heating
   4. Cooling
3. The odd force from the following is
   1. gravitational force
   2. elastic force
   3. frictional force
   4. electric force
4. Work done from force-extension graph is equal to
   1. slope of graph
   2. perimeter of graph
   3. area under graph
   4. maximum height
5. In streamline flow, the velocity of particles at a point is:
   1. Always different
   2. Zero
   3. Same
   4. Infinite
6. Maximum work is obtained by the process called:
   1. Isochoric
   2. Isothermal
   3. Isobaric
   4. Adiabatic
7. Negative work occurs when:
   1. Force is perpendicular to displacement
   2. Force is in same direction as displacement
   3. Force is opposite to displacement
   4. Force is zero
8. Polycrystalline solids consist of
   1. one large crystal
   2. many small crystals with random orientation
   3. fluid layers
   4. only amorphous particles
9. If density remains constant for steady flow, then ρ₁ = ρ₂ and continuity becomes:
   1. A₁ + v₁ = A₂ + v₂
   2. A₁/A₂ = v₁/v₂
   3. A₁v₁ = A₂v₂
   4. A₁v₁² = A₂v₂²
10. The average kinetic energy of gas molecules depends on temperature only.
    1. Pressure
    2. Volume
    3. Density
    4. Temperature
11. SI unit of work is:
    1. Watt
    2. Joule
    3. Newton
    4. Pascal
12. Crystalline solids have
    1. sharp melting point
    2. broad melting range
    3. no melting point
    4. variable melting behaviour