Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ]

CBSE Class 10 Sample Paper Science Solution - For 2024 Boards →
Science Class 10
Solutions to CBSE Sample Paper - Science Class 10

Question 22 - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10

Last updated at August 12, 2026 by

Q 22 - Screen by a converging lens - Teachoo.jpg

Examine the above figure and state which of the following option is correct? [one small box in the figure is equal to 1 cm] 

 

(A) The mirror has a focal length of -6 cm and will produce an image of magnification +1. 

(B) he mirror has a focal length of -3 cm and will produce an image of magnification -1. 

(C) The mirror has a focal length of -3 cm and will produce an image of magnification +1. 

(D) The mirror has a focal length of -6 cm and will produce an image of magnification -1.

 

Answer - 

  • Since the mirror used here is a concave mirror focal length is negative
  • Now, each box is of 1 cm, so, 
    • Focal length = -3 cm
  • And since image formed is inverted and of the same size, so magnification will be -1

 

concave-mirror---object-at-center-of-curvature---teachoo.jpg

So, the correct answer is (b)  

 

Remove Ads
Teachoo · Class 10 Explore Class 10
Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant with 16+ years of practical experience and 20+ years of teaching experience. He teaches Science, Economics, Accounting and English at Teachoo using clear explanations and exam-focused methods students can trust.

For faster and distraction-free study, students can choose Teachoo Black.