[ Official ] How was the Prelims 2021 paper?
How was the paper guys ?
Speed of light is ALWAYS same ,,, due to this I marked light year as C - लाइट travels in straight line as speed of light is different in different mediums
Don't know what is settled opinion
Maine bi exam me yehi sochke galat kiya ki its different in different mediums. But then light bends also when it travels from one medium to other.. ( Rarer - Denser)
when u are talking about astronomical distances we consider light travels in straight line. Answer will be D (100%)
But in a particular medium be it denser or rarer it travels in straight line that is for sure.
Maine bi exam me yehi sochke galat kiya ki its different in different mediums. But then light bends also when it travels from one medium to other.. ( Rarer - Denser)
when u are talking about astronomical distances we consider light travels in straight line. Answer will be D (100%)
Speed of light as well does get changed while Traveling from one medium to another medium I.e it is expressed as V = C/refractive index of the given medium through which light travels …frequency being the only thing that does not get changed while light travels from one medium to another medium.
Maine bi exam me yehi sochke galat kiya ki its different in different mediums. But then light bends also when it travels from one medium to other.. ( Rarer - Denser)
when u are talking about astronomical distances we consider light travels in straight line. Answer will be D (100%)
Speed of light as well does get changed while Traveling from one medium to another medium I.e it is expressed as V = C/refractive index of the given medium through which light travels …frequency being the only thing that does not get changed while light travels from one medium to another medium.
So what is answer as per you
@Captainnerd bhai light ki speed constant hoti h = c. It doesnt change. isme toh koi doubt hai hi nai. ab rahi baat question ki. Option D me ye kahan likha h ki "speed of light is always same when it changes medium"? dont you think that if UPSC wanted to say, it would have said this? Itna bhi confusion create nai karti h UPSC.
Bro only if that would be the case we were not being taught during our jee Preparation to find the speed of light in a medium having refractive index u being calculated as C/u.
- Arre bhaaii....debate karo...its Healthy --->but, Thoda time Mains preparation ko b de diya kiziye.
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plmokn25688524,leftfaithinmyself
Speed of light is ALWAYS same ,,, due to this I marked light year as C - लाइट travels in straight line as speed of light is different in different mediums
Don't know what is settled opinion
Maine bi exam me yehi sochke galat kiya ki its different in different mediums. But then light bends also when it travels from one medium to other.. ( Rarer - Denser)
when u are talking about astronomical distances we consider light travels in straight line. Answer will be D (100%)
But in a particular medium be it denser or rarer it travels in straight line that is for sure.
It bends due to gravity, due to the particle nature of light.
plmokn25688524,@Captainnerd bhai light ki speed constant hoti h = c. It doesnt change. isme toh koi doubt hai hi nai. ab rahi baat question ki. Option D me ye kahan likha h ki "speed of light is always same when it changes medium"? dont you think that if UPSC wanted to say, it would have said this? Itna bhi confusion create nai karti h UPSC.
Bhaii space mein Sirf agar earth aur sun ke beech ya kisi do planet ke beech medium same honge to fir speed same kah sakte hain but given the atmospheric medium and vacuum to speed of light bhi same nahi rah sakta hai ye cheej samajh lo.Bhale hi upsc jo bhi answer de apne answer key mein.
lambda or mu hi change kare hai humne bhi. pta nhi speed of light kab change ho gyi XD@Captainnerd I dont remember in any stage of prep when we started to increase/decrease light speed.anyway resting my argument
plmokn25688524,
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