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

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

Question 43 - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10

Last updated at Dec. 16, 2024 by

If the real image of a candle flame formed by a lens is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle be placed from the lens? 

(A) -80cm 

(B) -40 cm 

(C) -40/3 cm 

(D) -80/3 cm



If the real image of a candle flame formed by a lens is 3 times [MCQ] - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ]

part 2 - Question 43 - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10 - Class 10
part 3 - Question 43 - Solutions - CBSE Class 10 Sample Paper for 2022 Boards - Science [MCQ] - Solutions to CBSE Sample Paper - Science Class 10 - Class 10

Answer - So, the correct answer is (d)

Remove Ads

Transcript

Question 43 If the real image of a candle flame formed by a lens is three times the size of the flame and the distance between lens and image is 80 cm, at what distance should the candle be placed from the lens? (A) -80cm (B) -40 cm (C) -40/3 cm (D) -80/3 cm As image is real, it will also be inverted ∴ Magnification is negative Thus, m = −3 Also, Distance between lens and image is 80 cm Since it is a real image, image Distance will be positive. ∴ V = 80 cm We need to find, At what distance should candle be from the lens ∴ we need to find u Now, m = 𝑉/𝑢 −3 = 80/4 u = 80/(−3) u = − 𝟖𝟎/𝟑 cm So, the correct answer is (D)

Maninder Singh's photo - Co-founder, Teachoo

Made by

Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 14 years and a teacher from the past 18 years. He teaches Science, Economics, Accounting and English at Teachoo