The brilliance of diamond is due to total internal reflection of light. \(\mu\) for diamond is 2.42 , so that critical angle for diamond-air interface as calculated is \(24.4^{\circ}\). The diamond is cut suitably so that light entering the diamond from any face falls at an angle greater than \(24.4^{\circ}\); suffers multiple total internal reflection at the various faces and remains with in the diamond. Hence, the diamond sparkles.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364976
Light travels in two media \(A\) and \(B\) with speeds \(1.8 \times {10^8}\;m{s^{ - 1}}\) and \(2.4 \times {10^8}\;m{s^{ - 1}}\) respectively. Then, the critical angle between \(A\) and \(B\) :
364977
In an optical fibre during transmission of light
1 Energy increases
2 Energy decreases
3 No loss of propagation of energy takes place
4 Light partially reflects and refracts
Explanation:
Conceptual Question
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364978
The critical angle for a denser-rarer interface is \(45^\circ .\) The speed of light in rarer medium is \(3 \times {10^8}\;m/s\). The speed of light in the denser medium is
The brilliance of diamond is due to total internal reflection of light. \(\mu\) for diamond is 2.42 , so that critical angle for diamond-air interface as calculated is \(24.4^{\circ}\). The diamond is cut suitably so that light entering the diamond from any face falls at an angle greater than \(24.4^{\circ}\); suffers multiple total internal reflection at the various faces and remains with in the diamond. Hence, the diamond sparkles.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364976
Light travels in two media \(A\) and \(B\) with speeds \(1.8 \times {10^8}\;m{s^{ - 1}}\) and \(2.4 \times {10^8}\;m{s^{ - 1}}\) respectively. Then, the critical angle between \(A\) and \(B\) :
364977
In an optical fibre during transmission of light
1 Energy increases
2 Energy decreases
3 No loss of propagation of energy takes place
4 Light partially reflects and refracts
Explanation:
Conceptual Question
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364978
The critical angle for a denser-rarer interface is \(45^\circ .\) The speed of light in rarer medium is \(3 \times {10^8}\;m/s\). The speed of light in the denser medium is
The brilliance of diamond is due to total internal reflection of light. \(\mu\) for diamond is 2.42 , so that critical angle for diamond-air interface as calculated is \(24.4^{\circ}\). The diamond is cut suitably so that light entering the diamond from any face falls at an angle greater than \(24.4^{\circ}\); suffers multiple total internal reflection at the various faces and remains with in the diamond. Hence, the diamond sparkles.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364976
Light travels in two media \(A\) and \(B\) with speeds \(1.8 \times {10^8}\;m{s^{ - 1}}\) and \(2.4 \times {10^8}\;m{s^{ - 1}}\) respectively. Then, the critical angle between \(A\) and \(B\) :
364977
In an optical fibre during transmission of light
1 Energy increases
2 Energy decreases
3 No loss of propagation of energy takes place
4 Light partially reflects and refracts
Explanation:
Conceptual Question
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364978
The critical angle for a denser-rarer interface is \(45^\circ .\) The speed of light in rarer medium is \(3 \times {10^8}\;m/s\). The speed of light in the denser medium is
The brilliance of diamond is due to total internal reflection of light. \(\mu\) for diamond is 2.42 , so that critical angle for diamond-air interface as calculated is \(24.4^{\circ}\). The diamond is cut suitably so that light entering the diamond from any face falls at an angle greater than \(24.4^{\circ}\); suffers multiple total internal reflection at the various faces and remains with in the diamond. Hence, the diamond sparkles.
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364976
Light travels in two media \(A\) and \(B\) with speeds \(1.8 \times {10^8}\;m{s^{ - 1}}\) and \(2.4 \times {10^8}\;m{s^{ - 1}}\) respectively. Then, the critical angle between \(A\) and \(B\) :
364977
In an optical fibre during transmission of light
1 Energy increases
2 Energy decreases
3 No loss of propagation of energy takes place
4 Light partially reflects and refracts
Explanation:
Conceptual Question
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS
364978
The critical angle for a denser-rarer interface is \(45^\circ .\) The speed of light in rarer medium is \(3 \times {10^8}\;m/s\). The speed of light in the denser medium is
