AB is incident wave front on mirror R and mirror S whereas PQ and is reflected wave front from mirror R and mirror S respectively. Choose the correct statement

In the diagram shown, the separation between the slit is equal to where is the wavelength of the light incident on the plane of the slits A thin film of thickness and refractive index 2 has been placed in the front of the upper slit. Assuming the distance of the central maxima on the screen from O is:

Three weight A, B and C are connected by string as shown in the figure. The system moves over a frictionless pulley. The tension in the string connecting A and B is (where g is acceleration due to gravity)

As shown in the figure, two equal masses each of 2 kg are suspended from a spring balance. The reading of the spring balance will be

Figures I, II, III and IV depict variation of force with time
I) 
II) 
III) 
IV) 
The impulse is highest in the case of situations depicted. Figure

The variation of momentum with time of one of the body in a two body collision is shown in fig. The instantaneous force is maximum corresponding to point

A body of mass 3kg is acted on by a force which varies as shown in the graph below. The momentum acquired is given by

A particle of mass m, initially at rest, is acted upon by a variable force F for a brief interval of time T. It begins to move with a velocity u after the force stops acting. F is shown in the graph as a function of time. The curve is a semicircle.

A particle of mass m moving with velocity u makes an elastic one dimensional collision with a stationary particle of mass m. They are in contact for a very short time T. Their force of interaction increases from zero to F₀ linearly in time T/2, and decreases linearly to zero in further time T/2. The magnitude of F₀ is

A body of 2 kg has an initial speed 5ms^–1. A force acts on it for some time in the direction of motion. The force time graph is shown in figure. The final speed of the body.

In the figure given below, the position-time graph of a particle of mass 0.1 Kg is shown. The impulse at is

Which of the following graph represents x=5

A market with 3900 operating firms has the following distribution

If the histogram is constructed with the above data, the highest bar in the histogram would correspond to the class

The median from the following data is

For such questions, we should know the formula to find a median

What is the surface area of a triangular pyramid. with slant height 12 cm base area 24 cm² and primater 36 cm

John scored following marks in Term 1:  45, 50, 42, 38, 40, Find his mean deviation