Which of the following statements is NOT correct about JFETs (Junction Field Effect Transistors)?

Which of the following options is/are intrinsic semiconductors?

The maximum load capacity (elevator and passengers) ofan elevator is 1600 kg. It is moving up with a constant speed of 1.8 m/s. What is the minimum power delivered by the motor to the elevator. if the frictional force opposing the motion is 4000 N?

Which of the following options is NOT a correct difference between the interference and diffraction?

Interference fringes are produced in Young‘s double slit experiment by using two coherent sources of intensity ratio of 49 :1. What is the correct ratio of maximum and minimum intensities?

Which of the following options is the correct unit of permittivity?

The waves associated with relaxation or drowsiness are called _____ waves.

A water wave travels across a 42-meter wide pond in 7.0 seconds. the speed of the wave is _____.

When a projectile achieves escape speed from earth, it _______.

The velocities of seismic waves traveling from earthquake foci ________.

When we say charge is conserved, we mainly mean that charge can be _________.