To measure the speed of an approaching car a police officer shines?

Related Mcqs:

1. A man is in a car is moving with velocity of 36km/hr. His speed with repect to the car is ____________________?

   A. 10m/s
   B. 36m/s
   C. zero
   D. infinite

2. If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4. Its angular speed is______________?

   A. 4 rad. S-1
   B. 5 rad. S-1
   C. 1.6 rad. S-1
   D. 2.8 ms-1

3. A boy sitting in an open car moving with the constant speed throws a ball straight up into the air. The ball falls _________?

   A. behind him
   B. in front of him
   C. into his hand
   D. by his side

   Submitted by: Malik Asghar Hussain

4. The instrument used to measure wind speed is?

   A. Anemometer
   B. Barometer
   C. Hydrometer
   D. Hygrometer

5. A train is moving with a speed of 100mph. What will be its speed in m/s.?

   A. 45 m/s
   B. 90 m/s
   C. 100 m/s
   D. 120 m/s

   Submitted by: Zahid Jagirani

6. Steering of a car involves?

   A. A single force
   B. Two forces acting in the same direction
   C. Two forces acting along different lines and in opposite direction.
   D. A pair of forces acting along the same line and in opposite direction

7. Which pollutant from motor car exhaust causes mental disease _____?

   A. Carbon dioxide
   B. Lead
   C. Sulpher Dioxide
   D. Mercury

   Submitted by: WIQAR AHMAD

8. When car takes turn around a curve road, the passengers feel a force acting on them in a direction away from the center of the curve. It is due to__________________?

   A. Centripetal force
   B. Gravitational force
   C. Their inertia
   D. Centrifugal force

9. The beats frequency (sensible) for a human car is _____________________?

   A. 42Hz
   B. 7 Hz
   C. 256Hz
   D. 262Hz

10. The carburettor of a car is an application of_______________?

    A. Venturi meter
    B. Bernoulli equation
    C. Both A and B
    D. None