When light is reflected from a surface, the angle of incidence is: w) 30 degrees x) equal to the angle of reflection y) 90 degrees z) 180 degrees

When light is reflected from a surface, the angle of incidence is: w) 30 degrees x) equal to the angle of reflection y) 90 degrees z) 180 degrees
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ANSWER: X -- EQUAL TO THE ANGLE OF REFLECTION
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A light ray traveling in benzene strikes the benzene-air surface at the critical angle. The angle of refraction of the light ray is: w) 30 degrees x) 60 degrees y) 90 degrees z) 180 degrees

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Last Answer : ANSWER: Y -- 90 DEGREES

According to standard convention, the angles of incidence and reflection for a plane surface are measured from: w) the reflecting surface x) lines at 45 degrees to the reflecting surface y) a line at 90 degrees to the reflecting surface z) there is no standard

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A light ray traveling from glass into air strikes the glass-air surface at an angle 50 degrees to the normal. If the critical angle for the glass-air combination is 42 degrees, the percentage of light reflected from the surface is w) 6 x) 25 y) 38 z) 100

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The angle between the velocity and acceleration of a body is: w) never 90 degrees x) never 180 degrees y) sometimes 180 degrees z) never 0 degrees

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Assume a ray of light is incident on a smooth reflecting surface at an angle of incidence of 15 degrees to the normal. What is the angle between the incident ray and the reflected ray?

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The greatest induced EMF will occur in a straight wire moving at constant speed through a uniform magnetic field when the angle between the direction of the wire's motion and the direction of the magnetic field is w) 0 degrees x) 30 degrees y) 60 degrees z) 90 degrees

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In order for fiber optics to work, the incident light inside the fiber must hit the wall of the fiber at: w) 90 degrees x) 45 degrees y) an angle greater than the critical angle z) none of the above

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An incident ray comes in parallel to the principle axis of a concave mirror. Is it reflected: w) back along the incident ray x) at 30 degrees to incident ray y) through the focal point z) through the center of curvature

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Energy in reflected light : (1) does not depends on the angle of incidence (2) increases with the increase in angle (3) decreases with the increase in angle of incidence (4) becomes maximum for angle of incidence equal to 45°

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Last Answer : increases with the increase in angle

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Energy in reflected light : (1) does not depends on the angle of incidence (2) increases with the increase in angle (3) decreases with the increase in angle of incidence (4) becomes maximum for angle of incidence equal to 45°

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A wave incident on a surface at an angle 60 degree is having field intensity of 6 units. The reflected wave is at an angle of 30 degree. Find the field intensity after reflection. a) 9.4 b) 8.4 c) 10.4 d) 7.4

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A light ray travelling from denser to rarer medium at an angle of incidence more than critical angle of concerned media pair suffers. (1) reflection (2) refraction (3) diffraction (4) total internal reflection

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A projectile is fired into the air at an angle of 23 degrees. At what other angle would this projectile have the same range if air resistance is neglected? w) 46 degrees x) 60 degrees y) 67 degrees z) 68 degrees

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A pendulum which is suspended from the ceiling of a railroad car is observed to hang at an angle of 10 degrees to the right of vertical. Which of the following answers could explain this phenomena? w) The railroad car is at rest. x) The railroad car is accelerating to the left. y) The railroad car is moving with constant velocity to the right. z) The railroad car is accelerating to the right.

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If the angle of incidence formed on a concave mirror at a point is 30° then the angle of reflection will be: (1) 15° (2) 30° (3) 60° (4) 90°

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When a beam of light travels through media of two different densities, if theangle of incidence isgreater than the critical angle, _______ occurs. A) reflection B) refraction C) incidence D) criticism

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How is the value of angle of refraction greater than 90 degrees in full internal reflection ?

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Medium 1 is a glass (n1 = 1.5) and medium 2 is an ethyl alcohol (n2 = 1.36). For an angle of incidence of 30 degrees, determine the angle of refraction. ∙ A. 44.5 degrees ∙ B. 14.56 degrees ∙ C. 33.47 degrees ∙ D. 75 degrees

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A series circuit consists of a two ohm RESISTOR and a one ohm INDUCTOR. The relationship between current and voltage is: w) current will lag by 30 degrees. x) current will lag by 26 degrees. y) current will lead by 26 degrees. z) current will lead by 30 degrees.

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What does the law of reflection tell us about the angle of a reflected ray of light?

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The Snell’s law can be derived from which type of incidence? a) Incidence angle b) Reflected angle c) Refracted angle d) Oblique incidence

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If the temperature of the atmosphere rose 50 degr on a Fahrenheit thermometer, the rise on a Celsius thermometer would have been: w) 90 degrees x) 82.3 degrees y) 50.3 degrees z) 27.8 degrees

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In a waveguide, what is a frequency that would cause angles of incidence and reflection to be zero degrees?

Description : In a waveguide, what is a frequency that would cause angles of incidence and reflection to be zero degrees?

Last Answer : Critical Frequency

When two forces acting at a point are such that if the direction of one is reversed, the direction of the resultant is turned through a right angle, the forces must be a.inclined at more than 90? b.inclined at less than 90? c.equal in magnitude d.acting at 180? e.107 dynes

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