Concave mirrors (Hindi) | Light | Physics | Khan Academy

In this video, we will see how concave mirrors focus a parallel beam of light to a single point.
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Op

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concave convex ka sare doubts clear ho gye sir kash isi tarah easy tarike se hamare school ke teacher explain kar dete .

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Apne explainatio bhut achey se kiya..

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11:37 sa suno mistake bato

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Hmm building bhaut choti h in comparison to building ...yahi mistake h na?

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The mirror that you have made is curved outwards is convex mirror

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All sun rays are falls on the building and reflected rays are gather on one object so more heat generates

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Yes and that is, on the focus. And at that place the sun's image is formed

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[@abbasmehdi2923]

Sir , at the main problem , i.e. the building, you converged all rays at focus by showing that all rays are parallel. But we know that those sun rays are originating from sun. How , parallel rays can be originated from a point mass? Parallel rays concept was that , they originate from infinity , but they are originating from a finite distance(i.e. distance between earth and sun)? Please answer my question soon .

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Sir... sbse phli mistake.
Ye draw to convex mirror ka hai na

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Nhi concave hai qki reflecting side cave h

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Sir concave mirror virtual image form karta h ya real ??

[@ishitaagrawal2229]

Haa krta hai jb object pole and focus ke bich Mai place kiya ho

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Concave mirror form both real and virtual image.
REAL :- usually
VIRTUAL :- only in one condition,when object is between pole and focus.

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सर मेरा सवाल है की किसी गोलीय दर्पण में ध्रुव और मुख्य फोकस के बीच की दुरी को वक्रता त्रिज्या कहते है तो मुख्य फोकस और वक्रता केंद्र के बीच की दुरी को क्या कहते है?

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Kya baat hai

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This is because the building is coposed of concave mirror which focus all ray to a single point.

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