# General Knowledge - Basic General Knowledge - Discussion

1.

When light passes from air into glass it experiences change of

 [A]. frequency and wavelength [B]. frequency and speed [C]. wavelength and speed [D]. frequency, wavelength and speed

Explanation:

No answer description available for this question.

 Ali said: (Sep 6, 2011) Explain it.

 Radhakrishna said: (Mar 29, 2012) Because of relative permeability of glass speed will change. But coming to frequency and wavelength they are dependent on each other, if on changes another one will also change. Its relation is inversely proportional.

 Neel said: (May 2, 2012) Frequency does not changes with medium.

 Karun Sharma said: (Jul 18, 2013) Its depends on the refractive index of material so change its velocity hence also change wavelength and freq.

 Harshika said: (Oct 14, 2013) Its depends on the refractive index of material so change its velocity hence also change wavelength and freq.

 Ishana said: (Feb 7, 2014) Frequency is dependent on wavelength: 2(pie)/wavelength = -fr.

 Anu said: (May 30, 2014) Frequency does not change. Else color of light (monochromatic) will change. Since, Speed = Frequency x Wavelength. Speed and wavelength will change.

 Adamba said: (Oct 31, 2015) The frequency will change but it will be very small therefore it will be negligible hence only the wavelength and the speed will be considered. Since Speed = Frequency x Wavelength.

 Shipra said: (Dec 15, 2015) If frequency is inversely proportional to wavelength then as frequency change wavelength will also change so I think answer should be opt d. Please correct me if I am wrong.

 Tanmayi said: (Oct 24, 2016) Not getting this, Please explain me in detail.

 Sangam said: (Jan 13, 2017) Because air condition is different and water condition is different.

 Gombu said: (Mar 16, 2017) There is a change of energy when light enters to other mediums at different points. So to conserve the energy wavelength is changed without the change of frequency. And hence only speed and wavelength changes.

 Ashish said: (Dec 14, 2017) There is a change of energy to other mediums at different points. So to conserve the energy wavelength is changed without the change of frequency. And hence only speed & wavelength changs.