A student has focussed the magnified image of a candle flame on the screen using a convex lens. now he gradually moves the candle flame towards the lens and each time focuses the image on the screen. (a) in which direction - towards or away from the lens, does he move the screen each time to focus the flame ? (b) what happen to the size of image-does it increase or decrease? (c) what will he observe on the screen if he moves the candle flame very close to the lens?
CLASS 10 SCIENCE
PLEASE ANSWER ASAP. 50 points
Answers
Answered by
1
a) away b)increase c) image will be highlydiminished
geetarawat1517:
for the first ans. that is (a)
if the student moves the candle towards the lens how can he focus the image on the screen because the focus length will not be affected if we move the screen . it can only be foccussed if we move the lens and screen both. plz clear my doubt.
Similar questions