PHYSICS

JAMB 2017 - Question 10

Physics 2017 JAMB Past Questions - Question 10: The distance between the image and the object in a plane mirror is 40cm, if the distance of the object is reduce by 9.2cm,what is the distance of the object from the mirror?

Choose the correct answers from the options given.
The distance between the image and the object in a plane mirror is 40cm, if the distance of the object is reduce by 9.2cm,what is the distance of the object from the mirror?
A:
B:
C:
D:
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Correct Answer

E

Explanation

Image distance from mirror =object distance from the mirror.:. Object distance 40/2cm= 20cmNew object distance = 20 - 9.2cm =10.8cm.ANS no correct option
To find the new distance of the object from the mirror, we can subtract the reduction in distance from the original distance.

Original distance of the object from the mirror = 40 cm
Reduction in distance = 9.2 cm

New distance of the object from the mirror = Original distance - Reduction in distance
New distance of the object from the mirror = 40 cm - 9.2 cm
New distance of the object from the mirror = 30.8 cm

Therefore, the new distance of the object from the mirror is 30.8 cm.