A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec, . The work required to stop the hoop is______________?

A. 2 j
B. 4 j
C. 6 j
D. 8 j

The total kinetic energy of a hoop of mass 2 kg and radius 4 m sliding with linear velocity 8 m/sec and angular velocity 5 radian/sec is_________________?

A. 64 j
B. 400 j
C. 464 j
D. 89 j

Minimum potential energy of a system will be in the position of________________?

A. Stable equilibrium
B. Unstable equilibrium
C. Neutral equilibrium
D. All of the above

A block in the shape of a parallelopiped of sides lm x 2m x 3m lies on the surface. Which of the faces gives maximum stable block ?

A. 1 m x 2 m
B. 2 m x 3 m
C. 1 m x 3m
D. Equally stable on all faces

A cube on a smooth horizontal surface___________________?

A. Cannot be in stable equilibrium
B. Cannot be in neutral equilibrium
C. Cannot be in unstable equilibrium
D. Can be in any of these states

When two forces, each equal to P, act at 90° to each other, then the resultant will be_____________?

A. P
B. Pv2
C. P/v2
D. 2p

A rod AB carries three loads of 30 N, 70 N and 100 N at distances of 20 mm, 90 mm and 150 mm respectively from A. Neglecting the weight of the rod, the point at which the rod will balance is_______________?

A. 109.5 mm from a
B. 119.5 mm from a
C. 125.5 mm from a
D. 132.5 mm from a

The luster of diamond is due to_________?

A. Reflection
B. Total internal reflection
C. Refraction
D. None of these

Singapore was separated from which Country in 1965?

A. Japan
B. Malaysia
C. Brunei darussalam
D. None of the above

Kumbh Mela is a _______ day festival, where millions of Hindu devotees are expected to attend with the belief that taking a dip in the holy waters will cleanse them of their sins?

A. 25 days
B. 35 days
C. 45 days
C. 55 days