CBSE BOARD X, asked by Ramangupta7770, 1 year ago

in science exam we had a question to design an experiment to find the focal length of a concave mirror using a distant object ....
So in tht question i took the object sun . So it will be right na because many of my other classmates have taken distant tree or distant window bt only i hv taken as the object
So can u tell me if it is correcr to take that ?? Only class 10 students ans who rreally know d answer no spamming !!!!

Answers

Answered by mehhek67
2

Yess it is correct because rays from infinity and the image is formed at focus so we calculate focal length


sshivingupta: okkkkk
mehhek67: tell me which tye of rays
mehhek67: are used by raw wheat
mehhek67: this was our first question
mehhek67: the answer is infra rays and tgats not from the book
sshivingupta: you are all extraordinary///
mehhek67: i must say..or we are considered one by the teacher so they make us go through a papper that is as difficult as this...any ways you lucky people
sshivingupta: huu soo toh hai but how u students set get this level.....
mehhek67: isiliye toh koi northeast sey topper kabbi nahi hota hai..because the level of the paper is v hard
sshivingupta: bahut hard bahut hard
Answered by sshivingupta
1
yes! this will be become currect but on the big scale measurement because you need a total distance for focal length that wiil be very very big if we seen this from sun.But easy from a tree to window.


Hope you understand.

sshivingupta: yes but when you give a accurate answer+
mehhek67: its correct
sshivingupta: if it help mark as brainlist.
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