State whether the following statement is true or false.
If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.[1 marks]

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Solution

The statement is true.

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State whether the following statement is true or false.
If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.

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.

Q. Explain with diagrams how refraction of incident light takes place from
a) rarer to denser medium [1 Mark]
b) denser to rarer medium (incident angle > critical angle) [1 Mark]
c) denser to rarer medium (incident angle < critical angle) [1 Mark]
d) normal to the surface separating the two media [1 Mark]

Q. Which of the following conditions are necessary for total internal reflection to take place at the boundary of two optical media ?
1. Light is passing from optically denser medium to optically rarer medium.
2. Light is passing from optically rarer medium to optically denser medium.
3.Angle of incidence is greater than the critical angle.
4.Angle of incidence is less than the critical angle.

Q. When light enters from denser medium to rarer medium at an angle greater than critical angle, it reflects back. This phoenomenon is called

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State whether the following statement is true or false. If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.[1 marks]

The statement is true.

State whether the following statement is true or false.
If the angle of incidence is greater than the critical angle, light is not refracted at all, when it falls on the surface from a denser medium to a rarer medium.[1 marks]