Question

A student places a candle flame at a distance of about 60cm from a convex lens of focal length 10 cm and focuses the image of the flame on a screen. After that he gradually moves the flame towards the lens and each time focuses the image on the screen.(a) In which direction-toward or away from the lens, does he move the screen to focus the image?

Answer 1

Answer:

Explanation:

Quartiles divide a rank-ordered data set into four equal parts. The values that divide each part are called the first, second, and third quartiles; and they are denoted by Q1, Q2, and Q3, respectively.

Answer 2

The student moves the lens away from the screen to focus the image because on moving the candle towards the lens, the image distance increases.