A person climbs up a stalled escalator in 60 s. If standing on the same but escalator running with constant velocity he takes 40 s. How much time is taken by the person to walk up the moving escalator?

1) 37 s  2) 27 s  3) 24 s   4) 45 s

A moving coil Galvanometer of resistance 100W is converted to ammeter by a resistance of 0.1W in the circuit. Galvanometer gives full scale deflection at 100µA. The minimum current in the circuit for maximum deflection is

(1) 100.1 mA      (2) 1000.1 mA

(3) 1.001 mA      (4) 10.01 mA

Two projectiles A and B are thrown with velocities  v and v/2  respectively. They have the same range. If B is thrown at an angle of 15° to the horizontal, A must have been thrown at an angle

A block of mass 200 kg is being pulled up by men on an inclined plane at angle of 45° as shown in the figure. The coefficient of static friction is 0.5. Each man can only apply a maximum force of 500 N. Calculate the number of men required for the block to just start moving up the plane
 

1) 10
2) 15
3) 5 
4) 3

Two marbles, one twice as heavy as the other, are dropped to the ground from the roof of a building. Just before hitting the ground, the heavier marble has:

 The maximum height reached by a projectile is 4 metres. The horizontal range is 12 metres. Velocity of project in ms^–1 is (g – acceleration due to gravity)

A small block of mass 0.1kg lies on the a fixed inclined plane PQ which makes an angle θ with the horizontal. A horizontal force of 1N acts on the block through its centre of mass as shown in figure. Block remains stationary if (take g= 10 m/s² )

1)  θ = 45°   
2) θ > 45° and a frictional force acts on the block towards P
3) θ < 45° and a frictional force acts on the block towards Q
4) none

A wire of length ‘ l’ is bent in to a circular coil of one turn of radius R1 . Another wire of the same material and same area of cross section and same length is bent in to a circular coil of two turns of  radius R2. . When the same current flows through the two coils, the ratio of magnetic induction at the 

1)   1 : 2
2)   1 : 1 
3)   1 :  4
4)   3 : 1 

A $$ 15pF $$ capacitor is connected to a $$ 60\text{ }V $$ battery. How much electrostatic energy is stored?

1)  $$ 2.77\times {{10}^{-8}}\,J $$
2)  $$ 1.77\times {{10}^{-8}}\,J $$
3)  $$ 2.35\times {{10}^{-8}}\,J $$
4)  $$ 1.35\times {{10}^{-8}}\,J $$

A long straight wire carries an electric current of 2A. The magnetic induction at a perpendicular distance of 5 m from the wire is
(µ = 4 π x 10^-7  Hm^–1)  

1)  4 x 10^-8 T
2) 8 x 10^-8 T
3) 12 x 10^-8 T
4) 16 x 10^-8 T