
Please post the method and explanations as well :) ...

When light enters water its amplitude changes. Why? ...

A cricketer catches a ball of mass 150 gm in 0.5 sec moving with speed 20 m/sec then he experienced force of a. 300 N b. 30 N c. 3 N d 0.3N ...

How much force act on a body whose momentum is constant? a. 0 b. large force c. small force d. none of these ...

A force produce an acceleration of 2 m/s2 in a body A and 5 m/s2 another body B. Then the ratio of mass of A to the mass of B is a. 1/(2.5) b. 2.5 c. 2/(2.5) d. (3.5)/(2.5) ...

From a rifle of mass 4 kg,a bullet of mass 50 gm is fired with an initial velocity of 35 m/s. The initial recoil velocity of the rifle is a. 0.4375 m/s b. 0.5375 m/s c. 0.6375 m/s d. 0.3375 m/s ...

A particle moving with an initial velocity of 5 m/s i subjected to a uniform acceleration of 2.5 m/s2. Then the displacement in next 4 second will be a. 20 m b. 10 m c. 0 m d. none of these ...

While taking a left turn, a bike bends towrads the left while a car bends towards the right. Why does that happen? ...

What is the ratio of distance travelled to the displacement covered by a body along circumference of a semicircle of radius r ? ...

Four identical this metallic plates are kept closely as shown in the figure with respective charge on it. Plates 2 and 3 are connected by a conducting wire. Find the final charge distribution. *Image* ...

A boy is moving at a speed of 56 km/hr.One second later it is moving at 58 km/hr,then what is its acceleration? ...

The two ends of a uniform thin rod of length √2R and of mass 2√2kg can move without friction along a vertical circular path of radius R. The rod is released from the vertical position (ab). The force (in N) exerted by an ...

A body starts from rest and accelerates at a rate of 2m/s2. The distance travelled in 5 seconds is? ...

A particle is projected horizontally with a speed u from the top of a plane inclined at an angle with the horizontal. Then distance of point from the point of projection where the particle strike the plane will be  WHAT DOES ...

*Image* ...

*Image* ...

*Image* ...

A small sphere of mass m is released from rest in a large vessel filled with oil where it experiences a resistive force proportional to its speed i.e., F=kv, where k is a constant and v is the velocity. (a) Find the speed of ...

A train starts from a station with a constant acceleration of 0.4 m/s2. A passenger arrives at a station 6 s after the end of the train left the very same point. What is the least speed at which the passenger should run to ca ...

If 20 Joules of work is done in compressing a spring from 0 cm to 6 cm then find the work done in compressing the same from 3 cm to 6 cm. ...

*Image* ...

What will be the angle of deviation produced by two mirrors when they are placed 1. parallel to each other 2. perpendicular to each other 3. at an angle of 45° to each other ...

*Image* ...

A particle is projected from a point on the level ground and its height is h when at horizontal distance a and 2a from its point of projection. Find the velocity of projection. ...

*Image* ...

*Image* ...

*Image* ...

*Image* ...

*Image* ...

Please post the solution as well *Image* ...