Two parallel wires X and Y carry a current of 10 A and 8 A , they are separated by a distance of 5 cm. What is the force on a 11cm section of wire X?
The wavelength of the radiation emitted,when a hydrogen atom electron falls from infinity to stationary state 1, would be (Rydberg constant =1.097×107 m-1)
∫ex (sin x + cos x)dx is equal to -