If a wheel of radius r turns through an angle of 30° then the distance through which any point on its rim moves is______________?

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1. When a wheel 1 m in diameter makes 30 rev min the linear speed of the point on its rim in ms-1 is_______________?

   A. 2π B. π/2 C. π D. 20π...

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. When a body moves in a circle of radius r with linear speed V its centripetal force is_______________?

   A. mV/r2 B. mV/r C. mV2/r D. mV2/r2...

4. hen a body moves in a circle, the angle between its linear velocity and angular velocity is always_______________?

   WA. 180° B. 0° C. 90° D. 45°...

5. A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?

   A. independent mass m B. directly proportional to m C. directly proportional to q D. directly proportional to B...

6. The phase angle between the voltage and the current in an AC circuit consisting of a resistance is______________?

   A. Zero B. 45° C. 90° D. 180°...

7. When two bodies move toward each other with constant speeds the distance between them decreases at the rate of 6m / sec. If they move in the same direction the distance between them increases at the rate of 4m/sec. Then their speeds are________________?

   A. 5m/s, 1m/s B. 3m/s, 3m/s C. 6m/s, 1m/s D. 4m/s, 2m/s...

8. When a body moves in a straight line then its displacement coincides with__________________?

   A. distance B. force C. acceleration is zero D. both A and B...

9. If a material object moves with speed of light its mass becomes ________________?

   A. equal to its rest mass B. double of its rest mass C. infinite D. zero...

10. When a projectile moves upward , its vertical component of velocity?

    A. Decrease B. increase C. Remains same D. None of these Submitted by: Raza Baloch...