Two plane mirrors are facing each other. They are parallel, 3.0 cm apart, and 17

Question

Two plane mirrors are facing each other. They are parallel, 3.0 cm apart, and 17.0 cm in length. A laser beam is directed at the top mirror from the left edge of the bottom mirror. What is the smallest angle of incidence with respect to the top mirror, such that the laser beam hits each mirror only once before exiting on the right side? A) 70.6 degree B) 62.1 degree C) 45.0 degree D) 27.9 degree E) 19.4 degree A concave mirror has a radius of curvature of 20 cm. For which one of the following object distances will the image be real, inverted and smaller than the object? A) 25 cm B) 18 cm C) 15 cm D) 10 cm E) 5 cm A convex mirror has a radius of curvature of 0.50 m. Where must an object be placed in front of the mirror such that the image is formed 0.15 m behind the mirror? A) 0.0093 m B) 0.19 m C) 0.38 m D) 0.57 m E) 0.77 m A ray of light passes from air into a block of glass with a refractive index of 1.59 as shown in the figure. A) 2.38 m B) 2..20 cm C) 1.93 cm D) 1.66 cm E) 1.42 cm

Explanation / Answer

Accoridng to the chegg guidelines I am allowed to answer only 1 question at a time,

1) here we need to find the value of the angle ( theta)

Tan ( theta ) = ( 17.00 /3) / ( 3.00 )

theta = tan ^-1 ( 5.666667 / 3 ) = 62.10 deg ============ANSWER) OPTION B)

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