Human eye: accommodation and near point (Hindi) | Human eye | Physics | Khan Academy

Why do distant things get blurred when we concentrate on things close to us? Why can't we see things which are very close to us? Let's explore how our eyes work and get answers to questions like these by exploiting the power of ray diagrams.
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I was struggling with this topic but now,it's Cristal clear

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I am watching this video on 3 October 2020 on lockdown due to pandemic.
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Sir here u have considered refraction through lens only but what about the refraction caused by the aqueous medium between lens and cornea as in previous video you have explained that maximum refraction takes place over here

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Sir has basically talked about both things in a together basis he is talking about aqueous medium and lens both combined but just for ease of understanding he is saying lens

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15:59 In physics, ( angle of deviation ) decreases with increase in ( angle of prism ). So how is focal point coming close ?????I am considering eye lens corner as triangle prisms with base in middle and apex at corners . Please answer 😕

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15:30 summary

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[@sagar91221]

My near point is 8.5 cm😁

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Sir,hum tree ka incident ray "C"se kyou nahi leh sakthe

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surely we can take. It totally depends on you that how you wanted to make the image of the tree or any other object they just told us one way.
and the most interesting fact is they have taken the ray from center of curvature because center of curvature surely lies on the principal axis.

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They have taken ray from focus..

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With cute voice😜

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Agar humara farthest point infinity hai toh hum planets ko Q Ni dekh paate

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Ik cheej nhi btai ye ulti image ka kya sceen h tb kya ulta hi dikhega ya sida

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Aur blur ke sath saath double bhi to dikhta hai aysa Q

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