8) 8) A standing wave on a string is the result of A) two equal B) two equal amp

Question

8) 8) A standing wave on a string is the result of A) two equal B) two equal amplitude, equal wavelength waves traveling in the same direction. D) two amplitude, equal wavelength waves traveling in opposite directions. aves of different frequency, but equal amplitude traveling in opposite directions. waves of different frequency, but equal amplitude traveling in the same directi grating. If the first-order maximum occurs at 20.5° from the central spot, what is the distance between the slits of the grating? 9) A He-Ne laser, which produces light of wavelength 632.8 nm, is used to calibrate a diffraction9) D) 1.81 m E) 4.52 m A)2.20 m B) 3.62 m C) 0.905 um 10) In a double slit experiment, destructive interference will occure if the path length difference to the 10) screen from the two slits is A) N4 11) Which of these electromagnetic waves has the lowest frequency? A) infrared waves radio waves ) ultraviolet waves D) light waves E) gamma rays 12) In a single-slit diffraction experiment,if the wavelength of light is increased, what happens to the 12) width of the central bright fringe? A) It stays the same B) It becomes narrower C) It becomes wider 13) Determine the wavelength of the wave 13) y(em) A) 1.0 m B) 1.5 m C)3.0 m D) 9.0 m 14) You are generating traveling waves on a stretched string by wiggling one end. If you 14) _ suddenly begin to wiggle more rapidly without affecting the tension, you will cause the waves to move down the string A) at the same speed as before. B) faster than before. C) slower than before. C-2

Explanation / Answer

8) Option A is correct .

Standing wave is formed due to the superposition of two waves which are equal in amplitudes, wavelength, frequency and speed but travelling in opposite direction.

It is knokn as standing waves, because there is no transfer of energy, energy get confined within certain boundary region.

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