a student focused the image of a candle flame placed at 2 m from a convex lens of focal length 10cm, on a screen. After that he moves gradually the flame towards the lens and each time focuses its image on the screen
(A) In what direction does he move the lens to focus the flame on the screen?
(B) What happens to the size of the image of the flame formed on the screen?
(C) What difference is seen in the intensity (brightness) of the image of the flame on the screen?
(D) What is seen on the screen when the flame is very close (at about 5cm) to the lens?
Can you also give the reasons please?
Anonymous:
i too got the same question today in science boards exam
Even I got this
N I too want the answer
set 1 , right?
No I got 2
ohk
r u writing the answer?
Ya
Answers
Answered by
81
A. He moves it towards the object
B. Size increases
C. Brightness becomes dull or less
D. I'm not sure
Hope d other things help
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B. Size increases
C. Brightness becomes dull or less
D. I'm not sure
Hope d other things help
Mark as brainliest
increases
I'm not sure
and the answer of D is that image of the candle flame formed on the screen is virtual,erect and enlarged
How can a virtual image be obtained on a screen
u r right
it cannot be firmed on a screen
formed
But why will the image be dull?
Or how will it increase
Are u sure that we should move the lens towards the object....don't u think we shud move the lens towards the screen?
Answered by
43
d. image is not formed on screen because it forms virtual image
Ya correct I thought it was wrong
Read the question properly and ans
The 1st question
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