Hi! Could you please help me with the following questions: Thanks so much!! 1 QU

Question

Hi!

Could you please help me with the following questions:

Thanks so much!!

1 QUESTION 2 1 points Saved An object is placed at the focal point of a converging lens of focal length f at is the image distance? O 2f O at an infinite distance 1 points saved QUESTION 3 When an object is placed to the left of a lens, a REAL image is formed. Which one of the following conclusions in INCORRECT? O The object is placed within the focal point of the lens. O The lens is a converging lens. O The image distance can be larger or smaller than the object distance. O The image may be reduced or enlarged relative to the object. O The image is inverted QUESTION 4 1 points Sara has a far point of 5m. Which statement below concerning Sara's vision is true? O She is nearsighted and requires diverging lenses to correct her vision O She is farsighted and requires converging lenses to correct her vision. She has a normal vision O She is nearsighted and requires converging lenses to correct her vision.

Explanation / Answer

2. for converging lens,

f = + f

do = f

1/f = 1/di + 1/do

1/f = 1/di + 1/f

1/di = 0

that means di is inifinity.
so image will be infinite distance.

3. Only converging lens forms real images.

object places withing focal point will always form virtual images.

real image is always inverted.

Ans: The object is places witin the focal point of the lens

4. SHe is nearsigted and requires diverging lenses to correct her vision.

5.

virtual image is always upright.

converging lens may form virtial image when object is placed withing focal point.

so incorrect statement is

Ans: The lens must be diverging lens.

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