JAMB Physics 2017 Objective — Question 18

Question 18 of 40 from the Joint Admissions and Matriculation Board (JAMB) Physics 2017 Objective paper, with the correct answer and a full explanation.

Calculate the height of the image formed by a pinhole camera of length 12cm used to photograph an object 60cm away from the hole and 70cm high.

A. A. 10cm
B. B. 16cm
C. C. 5cm
D. D. 14cmCorrect

Explanation

Image height/object height = image distance/object distance: hi/70 = 12/60, hi = 14cm.

Sign up free to unlock

Score tracking
Practice history
Saved questions
Progress dashboard
Personalized sessions
Weak-topic breakdown

…and/or go further with premium services and No Ads.

Create free account

More questions from Physics 2017 Objective More Physics past papers