9th Class Physics 1st Quarter Book Paper

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

1. The agency which changes or tends to change the state of rest or of uniform motion of a body:
   1. Weight
   2. Force
   3. Inertia
   4. Momentum
2. The repeated to and fro movement between two positions or states of an object.
   1. Oscillation
   2. Rotation
   3. Translation
   4. Geophysics
3. The slope of a straight line in distance-time graph gives the magnitude of:
   1. Force
   2. Displacement
   3. Speed
   4. Acceleration
4. Net force is the:
   1. resultant force
   2. centripetal force
   3. Centrifugal force
   4. All of these
5. Which type of error is often described as 'bias'?
   1. Random Error
   2. Systematic Error
   3. Measurement Error
   4. Human Error
6. A car is moving with velocity of 10 m/s. If it has acceleration of 2 m/s2 for 10 seconds. What is final velocity of the car?
   1. 30 m/s
   2. 20 m/s
   3. 10 m/s
   4. 15 m/s
7. First law of motion is also known as law of:
   1. Torque
   2. Acceleration
   3. Inertia
   4. None of these
8. 0.2 mm in units of meters is.
   1. 0.0002 m
   2. 2 × 104 m
   3. Both A & B
   4. None of these
9. The shortest distance between two points is known as:
   1. Velocity
   2. Displacement
   3. Speed
   4. Distance
10. Which of the following is the unit of momentum?
    1. Nm
    2. kgms-1
    3. Ns
    4. Both b & c
11. Which one of the following is a vector quantity?
    1. Displacement
    2. Speed
    3. Volume
    4. Work
12. If a body is falling under the gravity then its initial velocity will be:
    1. Positive
    2. Negative
    3. Uniform
    4. Zero