Refraction at plane surface
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NEET DIGITAL LIBRARY
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364945 If light travels a distance \(x\) in \({t_1}\) sec in air and \(10{\rm{ }}x\) distance in \({t_2}\) sec in a medium, the critical angle of the medium will be

1 \({\sin ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
2 \({\tan ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
3 \({\tan ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
4 \({\sin ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364946 Assertion :
Diamond glitters brilliantly.
Reason :
Diamond does not absorb sunlight.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
AIIMS - 2005
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364947 If the critical angle for total internal reflection from medium to vacuum is \(30^{\circ}\), the velocity of light in medium is

1 \(3 \times {10^8}\;m/s\)
2 \(1.5 \times {10^8}m/s\)
3 \(6 \times {10^8}\;m/s\)
4 \(\sqrt 3 \times {10^8}\;m/s\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364948 Statement A :
Propagation of light through an optical fibre is due to total internal reflection taking place at the core-clade interface.
Statement B :
Refractive index of the material of the core of the optical fibre is greater than that of air.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364945 If light travels a distance \(x\) in \({t_1}\) sec in air and \(10{\rm{ }}x\) distance in \({t_2}\) sec in a medium, the critical angle of the medium will be

1 \({\sin ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
2 \({\tan ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
3 \({\tan ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
4 \({\sin ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364946 Assertion :
Diamond glitters brilliantly.
Reason :
Diamond does not absorb sunlight.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
AIIMS - 2005
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364947 If the critical angle for total internal reflection from medium to vacuum is \(30^{\circ}\), the velocity of light in medium is

1 \(3 \times {10^8}\;m/s\)
2 \(1.5 \times {10^8}m/s\)
3 \(6 \times {10^8}\;m/s\)
4 \(\sqrt 3 \times {10^8}\;m/s\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364948 Statement A :
Propagation of light through an optical fibre is due to total internal reflection taking place at the core-clade interface.
Statement B :
Refractive index of the material of the core of the optical fibre is greater than that of air.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364945 If light travels a distance \(x\) in \({t_1}\) sec in air and \(10{\rm{ }}x\) distance in \({t_2}\) sec in a medium, the critical angle of the medium will be

1 \({\sin ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
2 \({\tan ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
3 \({\tan ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
4 \({\sin ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364946 Assertion :
Diamond glitters brilliantly.
Reason :
Diamond does not absorb sunlight.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
AIIMS - 2005
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364947 If the critical angle for total internal reflection from medium to vacuum is \(30^{\circ}\), the velocity of light in medium is

1 \(3 \times {10^8}\;m/s\)
2 \(1.5 \times {10^8}m/s\)
3 \(6 \times {10^8}\;m/s\)
4 \(\sqrt 3 \times {10^8}\;m/s\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364948 Statement A :
Propagation of light through an optical fibre is due to total internal reflection taking place at the core-clade interface.
Statement B :
Refractive index of the material of the core of the optical fibre is greater than that of air.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
NEET DIGITAL LIBRARY
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364945 If light travels a distance \(x\) in \({t_1}\) sec in air and \(10{\rm{ }}x\) distance in \({t_2}\) sec in a medium, the critical angle of the medium will be

1 \({\sin ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
2 \({\tan ^{ - 1}}\left( {\frac{{{t_1}}}{{{t_2}}}} \right)\)
3 \({\tan ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
4 \({\sin ^{ - 1}}\left( {\frac{{10{t_1}}}{{{t_2}}}} \right)\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364946 Assertion :
Diamond glitters brilliantly.
Reason :
Diamond does not absorb sunlight.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.
2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.
3 Assertion is correct but Reason is incorrect.
4 Both Assertion and Reason are incorrect.
AIIMS - 2005
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364947 If the critical angle for total internal reflection from medium to vacuum is \(30^{\circ}\), the velocity of light in medium is

1 \(3 \times {10^8}\;m/s\)
2 \(1.5 \times {10^8}m/s\)
3 \(6 \times {10^8}\;m/s\)
4 \(\sqrt 3 \times {10^8}\;m/s\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

364948 Statement A :
Propagation of light through an optical fibre is due to total internal reflection taking place at the core-clade interface.
Statement B :
Refractive index of the material of the core of the optical fibre is greater than that of air.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both Statements are correct.
4 Both Statements are incorrect.
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