5) In Fig. 35.4, Lloyd\'s Mirror is anapparatus that can be used to form interfe

ID: 1758657 • Letter: 5

Question

5) In Fig. 35.4, Lloyd's Mirror is anapparatus that can be used to form interference fringes usinga

single source. Light from the sourceis reflected off a plane mirror and viewed on a screen.A

reflected ray and a direct ray caninterfere to form a fringe pattern on the screen. Inthe

arrangement drawn here, the screen is2.4 m from the source, and the separation betweenfringes

on the screen is 1.3 mm. The light haswavelength 580 nm. How high above the reflecting planeis

the sourcepositioned?

A) 1.08 mm B) 1.64 mm C) 0.54 mm D) 1.22 mm E)0.27 mm

5) In Fig. 35.4, Lloyd's Mirror is an apparatusthat can be used to form interference fringes using a

single source. Light from the source is reflectedoff a plane mirror and viewed on a screen. A

reflected ray and a direct ray can interfere toform a fringe pattern on the screen. In the

arrangement drawn here, the screen is 2.4 m fromthe source, and the separation between fringes

on the screen is 1.3 mm. The light has wavelength580 nm. How high above the reflecting plane is

the source positioned?

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