Question

1. When parallel light goes through a converging lens, you would observe

Group of answer choices

a focal point

parellel light

divergent light

Question 2: For the thin lens, the relation about object plane and image plane is they are in the same side of lens plane.

Group of answer choices

True

False

Question 3: If the focal length of a thin lens is 10cm, we use a pencil as the object and the distance between pencil and lens planes is 14cm. Determine the image distance in meter. Give your answer in two decimals.

Question 4: In the last question system, if the height of pencil is 5cm, and the object distance is 15cm. Determine the image height in meter.

Answer 1

O. When parallel light goes through a converging lens - We observe a focal point -2. The object plane and the image plane not necessarily lie in the same side of lens plane. [False ] ③. Given f = 10cm • u=-14 cm a v=? t th = // // - - 14 cm - Tom = v= 135 cm Ans or 35.00cm 4. Given 0= 5cm , u=-15 cm , I =?. M = v= 1 I = vxo - - - t = 1 I - 30.00 cm x 5cm - -10.00 cm - - - 15 cm = 1 room - 0.1om v=30.00cm Image height = [0.10m) Ans. - 15cm ΟΥ