Physics
Grade-10
Easy
Question
An object is situated at an infinite distance from a convex lens of focal length 55 cm. Its image will be formed _____.
- In the same side as the object
- In the opposite side as the object
- Behind the object
- At optic center
Hint:
The correct answer is: In the same side as the object
- Lens Formula :
- here u =infinite so 1/u=0
- so
- Distances that are calculated in the orientation of the incident ray are positive and the distances calculated in the direction opposite to the incident rays are negative.
- so v is positive hence it is opposite side of object
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