Question

A wedge shaped film is illuminated with monochromatic light. Obtain an expression for
number of dark bands per unit length (bandwidth).

Answer 1

Explanation:

Wedge Shaped Film - Free download as PDF File (.pdf), Text ... where l = length of the air wedge ... a film of variable thickness dark and bright fringes in reflected

Answer 2

d/l = λ / 2μꞵ i.e d = lλ / 2ꞵ for an air film μ =1, ꞵ which is distance between two dark or bright/dark bands can be measured experimentally. Therefore, diameter can be determined.

Wavelength :

• Wavelength is the distance 'tween equal points (abutting crests) in the abutting phases of a waveform signal spread precede or ahead a strand. In Wi-Fi wholes, this distance is occasionally particularized in meters (m), centimeters (cm) or millimeters (mm).

• In the case of shade resembling such a color (IR), apparent light, ultraviolet (UV), and gamma fallout (γ), the intuitiveness is occurring every day particularized in nanometers (nm), that are parts of 10-9 m, or angstroms (Å), that are parts of 10-10 m.
• Wavelength is with the order reversed had connection with commonness, that refers to the number of wave eras per second. The greater the commonness of the signal, the smaller the awareness.

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