Question

a student focused the image of a candle flame placed about 2m from a convex lens of focal length 10cm on screen . After that he moves gradually the flame towards the lens and each time focuses its image on the screen.

(1) in which direction does he move the lens to focus the flame on the screen?
(2) what happens to the size of the image of the flame formed on the screen?
(3) what difference is seen in the intensity (brightness) of the image of the flame on the screen?
(4) what is seen on the screen when the flame is very close (at about 5cm) to the lens?

Plz answer fast!!!
The best answer will be given as the BRAINLIEST!!!!!!!

Answer 1

a)The object is being moved towards the lens(as the stated in the question)

b)The size of the image increases as we move closer to the lens.

c)The brightness of the image also increases as the image gets more focused to a point.

d)When it gets to a distance of 5cm from the lens it is closer than the focal length and therefore we get a virtual image which cannot be caught on a screen