In a Young's double-slit experiment the center of a bright fringe occurs wherever waves from the slits differ in the distance they travel by a multiple of___________.

Comparing the distance between the slit and the screen ‘D’ and the distance between two slits (d), we must place in a way that ________.

The distances measured in the opposite direction of the incident light are considered  _________.

Which of the following principles can be used to determine the shape of the wavefront for a plane wave propagating through a medium?

The first man successfully to demonstrate the interference of light was _________.

In this experiment, Young identified the phenomenon called ______.

The Doppler effect is used to measure the ________ at which stars and galaxies are approaching or receding from us.

A reflected sound that arrives before 0.10 s is perceived as an increase in volume and is called _________.

The intensity of sound is defined as the rate of flow of ___________ perpendicular to the direction of the wave.

Loudness is measure in units called the ‘_____’ by mean of noise meters