Free account: track your progress — Sign up free

JAMB Physics 2022 Objective — Question 34

Question 34 of 41 from the Joint Admissions and Matriculation Board (JAMB) Physics 2022 Objective paper, with the correct answer and a full explanation.

Advertisement

Diverging lens of focal length 30 cm produces image 20 cm from lens. Object distance:

  • A. 10 cm
  • B. 12 cm
  • C. 60 cmCorrect
  • D. 50 cm

Explanation

f=−30, v=−20; 1/u=1/f−1/v=−1/30+1/20=1/60 → u=60 cm.

Advertisement

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.