if a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incidence must be
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Question
If a ray of light passes from a denser medium to a rarer medium in a straight line, the angle of incident must be _____
A0o
B30o
C60o
D90o Medium Open in App
Updated on : 2022-09-05
Solution Verified by Toppr
Correct option is A)
option A is correct
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A light ray is travelling from denser to rarer medium. The angle of incidence is equal to the critical angle. Then which of the following statements is/aretrue?
A light ray is travelling from denser to rarer medium. The angle of incidence is equal to the critical angle. Then which of the following statements is/aretrue?
Byju's Answer Standard X Physics Critical Angle A light ray i... Question
A light ray is travelling from denser to rarer medium. The angle of incidence is equal to the critical angle. Then which of the following statements is/are true?
A
The angle of refraction is 90 degrees.
B
The refracted ray passes along the boundary separating the two medium.
C
The incident ray bounces back to the denser medium.
D
The incident ray passes undeviated from denser medium to rarer medium.
Open in App Solution
The correct options are
A The angle of refraction is 90 degrees.B The refracted ray passes along the boundary separating the two medium.The critical angle is the angle of incidence in the denser medium corresponding to which the angle of refraction in the rarer medium is 90 degrees. When the angle of incidence in the denser medium is equal to the critical angle, then the refracted ray passes along the boundary separating the two medium.
If the angle of incidence is greater than the critical angle, the ray will be reflected back to the same medium without undergoing refraction. This is known as total internal reflection.
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SIMILAR QUESTIONS
Q. A light ray is travelling from denser to rarer medium. The angle of incidence is equal to the critical angle. Then which of the following statements is/are true?Q. A light ray is travelling from a denser to rarer medium. The angle of incidence is equal to the critical angle. Which of the following statement(s) is/are true?Note: Question can have mutliple correct options
[2 marks]
Q. Which of the following are the essential conditions for Total Internal Reflection to take place?A. Ray of light should travel from rarer medium to denser medium.
B. Ray of light should travel from denser medium to rarer medium.
C. Angle of incidence should be greater than the critical angle.
D. Critical angle must be greater than the angle of incidence.
Q. Critical angle for a light ray travelling from denser to rarer medium is defined as the angle of incidence at which the angle of refraction is 90°.If a ray of light travels from water
( μ w ) to air ( μ a )
. Find the critical angle?
Q. Mark the correct statement/statements:a) Angle of incidence is equal to angle of refraction
b) Angle of refraction is smaller than angle of incidence when light ray travels from rarer medium to denser medium.
c) Angle of refraction is greater than angle of incidence when light ray travels from denser medium to rarer medium.
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-MULTIPLE CHOICE QUESTIONS-REFRACTION OF LIGHT
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लिखित उत्तर A 0 ∘ B 30 ∘ C 60 ∘ D 90 ∘ Answer
The correct Answer is A
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