**501. The relation between linear and angular acceleration is______________?**

A. a = a x r

B. a = r x a

**C. a = a x r**

D. r = a x a

**502. When a body is whirled in a horizontal circle by means of a string the centripetal force is supplied by______________?**

A. Mass of a body

B. Velocity of body

**C. The tension in the string**

D. Centripetal acceleration

**503. Centripetal force performs_______________?**

A. Maximum work

B. Minimum work

C. Negative work

**D. No work**

**504. 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

**505. A stone is whirled in a vertical circle at the end of a string. When the stone is at the highest position the tension in the string is______________?**

A. Maximum

B. Zero

**C. Equal to the weight of the stone**

D. Less than the weight of the stone

**506. The span of the broad jump depends upon_______________?**

A. Mass of the jumper

B. Height of jump

**C. Angle of projection**

D. None

**507. In case of planets the necessary acceleration is provided by______________?**

**A. Gravitational force**

B. Frictional force

C. Coulomb force

D. Centripetal force

**508. 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

**509. A body can have constant velocity when it follows a_____________?**

A. Elliptical path

B. Circular path

C. Parabolic path

**D. Rectilinear path**

**510. A body moving along the circumference of a circle completes two revolutions. If the radius of the circular path is R the ration of displacement to the covered path will be_____________?**

A. πR

B. 2π R

**C. 0**

D. 4πR