A double slit experiment, using light of wavelength 600 nm, results in fringes being produced on a screen. The fringe separation is found to be 1.0 mm. When the distance between the double slits and the viewing screen is increased by 2.0 m, the fringe separation increases to 3.0 mm. What is the separation of the double slits producing the fringes?

A straight tube is closed at one end and has a loudspeaker positioned at the open end. The frequency of the loudspeak…

The table shows four possible combinations of values for the laser wavelength, slit separation and slit-screen distan…

Two waves, P and Q, meet at a point X and superpose. Initially, the two waves meet at X in phase (zero phase differen…

A beam of light with power P has an area of cross-section A. The amplitude of the light waves in the beam is X. The b…

What are the definitions of potential difference (p.d.) and electromotive force (e.m.f.), in terms of energy transfer…

A resistor dissipates 25W of power when there is a potential difference (p.d.) of 4.0 V across it. What is the resist…