Light enters water (n = 1.33) from air. The incident light ray makes a 0.44° angle with the normal to the surface on the air side. What will be the angle made with the normal by the refracted ray on the water side?
A. Nearly 90°
B. 1.58°
C. 0.188°
D. 0.33°
Answer: D
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Which of the following statements about eclipses is true?
A. A partial solar eclipse happens every month, but not the total solar eclipse. B. A total solar eclipse is visible from any location on the day-side of Earth. C. A lunar eclipse is visible from any location on the night-side of Earth. D. All of these choices are correct.
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a. True b. False Indicate whether the statement is true or false
In a single-slit diffraction experiment, a beam of monochromatic light passes through a slit of width 11.0 ?m
If the first order dark fringe of the resulting diffraction pattern is at an angle of 4.31°, what is the wavelength of light? A) 827 nm B) 301 nm C) 602 nm D) 402 nm E) 201 nm
A 10-kg rock and a 20-kg rock are dropped at the same time and experience no significant air resistance. If the 10-kg rock falls with acceleration a, what is the acceleration of the 20-kg rock?
A) 4a B) a/2 C) a/4 D) 2a E) a