Question 31
Light and ReflectionAn object of height 4cm is placed in front of a cuboid pinhole camera of size 6 cm. If the image formed is 2 cm high, how far is the object from the pinhole?
- A.3.0 cm
- B.8.0 cm
- C.12.0 cm
- D.16.0 cm
Show the answer and explanation
Answer: C (12.0 cm)
Explanation
Magnification = image height ÷ object height = image distance ÷ object distance. 2/4 = 6/u, so u = 12 cm.