Refraction at plane surface
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PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365026 Light of wavelength 5000\( \mathop A^{~~\circ} \) in air has wavelength in glass \({(\mu=1.5)}\) equal to

1 3543 \( \mathop A^{~~\circ} \)
2 4333 \( \mathop A^{~~\circ} \)
3 3333 \( \mathop A^{~~\circ} \)
4 5433 \( \mathop A^{~~\circ} \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365027 When light travels from air to water and from water to glass, again from glass to \(C{O_2}\) gas and finally through air. The relation between their refractive indices will be given by

1 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gas}{n_{gl}}{ \times _{gl}}{n_a} = 1\)
2 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}}{ \times _{gas}}{n_a} = 1\)
3 There is no such relation
4 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}} = 1\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365028 When a light ray enters from oil to glass on oil- glass interface, then velocity of light changes by a factor of \(\left[ {{\rm{given}},{\mu _{{\rm{oil }}}} = 2\,{\rm{and}}\,{\mu _{{\rm{glass }}}} = 3/2} \right]\)

1 \(\frac{4}{3}\)
2 \(\frac{3}{4}\)
3 3
4 1
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365029 If velocity of light in air is \(c\), what will be the velocity of light in a medium of refractive index 1.4 ?

1 \(2.1 \times {10^8}\;m/s\)
2 \(1.4 \times {10^8}\;m/s\)
3 \(2.8 \times {10^8}\;m/s\)
4 None of these
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365030 The frequency of a light wave in a material is \(2 \times {10^{14}}\;Hz\) and wavelength is \(5000\mathop A\limits^ \circ .\) The refractive index of material will be

1 1.4
2 1.5
3 3
4 1.33
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PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365026 Light of wavelength 5000\( \mathop A^{~~\circ} \) in air has wavelength in glass \({(\mu=1.5)}\) equal to

1 3543 \( \mathop A^{~~\circ} \)
2 4333 \( \mathop A^{~~\circ} \)
3 3333 \( \mathop A^{~~\circ} \)
4 5433 \( \mathop A^{~~\circ} \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365027 When light travels from air to water and from water to glass, again from glass to \(C{O_2}\) gas and finally through air. The relation between their refractive indices will be given by

1 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gas}{n_{gl}}{ \times _{gl}}{n_a} = 1\)
2 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}}{ \times _{gas}}{n_a} = 1\)
3 There is no such relation
4 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}} = 1\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365028 When a light ray enters from oil to glass on oil- glass interface, then velocity of light changes by a factor of \(\left[ {{\rm{given}},{\mu _{{\rm{oil }}}} = 2\,{\rm{and}}\,{\mu _{{\rm{glass }}}} = 3/2} \right]\)

1 \(\frac{4}{3}\)
2 \(\frac{3}{4}\)
3 3
4 1
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365029 If velocity of light in air is \(c\), what will be the velocity of light in a medium of refractive index 1.4 ?

1 \(2.1 \times {10^8}\;m/s\)
2 \(1.4 \times {10^8}\;m/s\)
3 \(2.8 \times {10^8}\;m/s\)
4 None of these
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365030 The frequency of a light wave in a material is \(2 \times {10^{14}}\;Hz\) and wavelength is \(5000\mathop A\limits^ \circ .\) The refractive index of material will be

1 1.4
2 1.5
3 3
4 1.33
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PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365026 Light of wavelength 5000\( \mathop A^{~~\circ} \) in air has wavelength in glass \({(\mu=1.5)}\) equal to

1 3543 \( \mathop A^{~~\circ} \)
2 4333 \( \mathop A^{~~\circ} \)
3 3333 \( \mathop A^{~~\circ} \)
4 5433 \( \mathop A^{~~\circ} \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365027 When light travels from air to water and from water to glass, again from glass to \(C{O_2}\) gas and finally through air. The relation between their refractive indices will be given by

1 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gas}{n_{gl}}{ \times _{gl}}{n_a} = 1\)
2 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}}{ \times _{gas}}{n_a} = 1\)
3 There is no such relation
4 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}} = 1\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365028 When a light ray enters from oil to glass on oil- glass interface, then velocity of light changes by a factor of \(\left[ {{\rm{given}},{\mu _{{\rm{oil }}}} = 2\,{\rm{and}}\,{\mu _{{\rm{glass }}}} = 3/2} \right]\)

1 \(\frac{4}{3}\)
2 \(\frac{3}{4}\)
3 3
4 1
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365029 If velocity of light in air is \(c\), what will be the velocity of light in a medium of refractive index 1.4 ?

1 \(2.1 \times {10^8}\;m/s\)
2 \(1.4 \times {10^8}\;m/s\)
3 \(2.8 \times {10^8}\;m/s\)
4 None of these
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365030 The frequency of a light wave in a material is \(2 \times {10^{14}}\;Hz\) and wavelength is \(5000\mathop A\limits^ \circ .\) The refractive index of material will be

1 1.4
2 1.5
3 3
4 1.33
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PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365026 Light of wavelength 5000\( \mathop A^{~~\circ} \) in air has wavelength in glass \({(\mu=1.5)}\) equal to

1 3543 \( \mathop A^{~~\circ} \)
2 4333 \( \mathop A^{~~\circ} \)
3 3333 \( \mathop A^{~~\circ} \)
4 5433 \( \mathop A^{~~\circ} \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365027 When light travels from air to water and from water to glass, again from glass to \(C{O_2}\) gas and finally through air. The relation between their refractive indices will be given by

1 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gas}{n_{gl}}{ \times _{gl}}{n_a} = 1\)
2 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}}{ \times _{gas}}{n_a} = 1\)
3 There is no such relation
4 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}} = 1\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365028 When a light ray enters from oil to glass on oil- glass interface, then velocity of light changes by a factor of \(\left[ {{\rm{given}},{\mu _{{\rm{oil }}}} = 2\,{\rm{and}}\,{\mu _{{\rm{glass }}}} = 3/2} \right]\)

1 \(\frac{4}{3}\)
2 \(\frac{3}{4}\)
3 3
4 1
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365029 If velocity of light in air is \(c\), what will be the velocity of light in a medium of refractive index 1.4 ?

1 \(2.1 \times {10^8}\;m/s\)
2 \(1.4 \times {10^8}\;m/s\)
3 \(2.8 \times {10^8}\;m/s\)
4 None of these
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365030 The frequency of a light wave in a material is \(2 \times {10^{14}}\;Hz\) and wavelength is \(5000\mathop A\limits^ \circ .\) The refractive index of material will be

1 1.4
2 1.5
3 3
4 1.33
Join With Us for More Updates
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365026 Light of wavelength 5000\( \mathop A^{~~\circ} \) in air has wavelength in glass \({(\mu=1.5)}\) equal to

1 3543 \( \mathop A^{~~\circ} \)
2 4333 \( \mathop A^{~~\circ} \)
3 3333 \( \mathop A^{~~\circ} \)
4 5433 \( \mathop A^{~~\circ} \)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365027 When light travels from air to water and from water to glass, again from glass to \(C{O_2}\) gas and finally through air. The relation between their refractive indices will be given by

1 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gas}{n_{gl}}{ \times _{gl}}{n_a} = 1\)
2 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}}{ \times _{gas}}{n_a} = 1\)
3 There is no such relation
4 \({}_a{n_w} \times {}_w{n_{gl}} \times {}_{gl}{n_{gas}} = 1\)
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365028 When a light ray enters from oil to glass on oil- glass interface, then velocity of light changes by a factor of \(\left[ {{\rm{given}},{\mu _{{\rm{oil }}}} = 2\,{\rm{and}}\,{\mu _{{\rm{glass }}}} = 3/2} \right]\)

1 \(\frac{4}{3}\)
2 \(\frac{3}{4}\)
3 3
4 1
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365029 If velocity of light in air is \(c\), what will be the velocity of light in a medium of refractive index 1.4 ?

1 \(2.1 \times {10^8}\;m/s\)
2 \(1.4 \times {10^8}\;m/s\)
3 \(2.8 \times {10^8}\;m/s\)
4 None of these
PHXII09:RAY OPTICS AND OPTICAL INSTRUMENTS

365030 The frequency of a light wave in a material is \(2 \times {10^{14}}\;Hz\) and wavelength is \(5000\mathop A\limits^ \circ .\) The refractive index of material will be

1 1.4
2 1.5
3 3
4 1.33