Physics
Grade-10
Easy
Question
The corrective lens for a myopic eye is ____.
- Of negative power
- A concave lens
- Capable of pushing back the far point to infinity
- All of the above
Hint:
In myopia the image is formed beyond the retina.
The correct answer is: All of the above
The correct option is d) All of the above.
For a myopic eye, the corrective lens is a concave lens. They have a negative power and are capable of pushing back the far point to infinity.
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Read the following statements and choose the correct answer.
I: Assertion: In a hypermetropic eye, the light rays are focused on the back of the retina.
II: Reason: The light rays can be focused on to the retina by using a convex lens.
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I: Assertion: In a hypermetropic eye, the light rays are focused on the back of the retina.
II: Reason: The light rays can be focused on to the retina by using a convex lens.
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The near point of a hypermetropia eye is _____.
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_____ can be used to correct hypermetropia.
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_____ is the defect of vision wherein a person cannot see nearby objects clearly due to the weakening of eye muscles.
_____ is the defect of vision wherein a person cannot see nearby objects clearly due to the weakening of eye muscles.
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____ is the eye defect that causes due to the cloudiness of the eye lens.
____ is the eye defect that causes due to the cloudiness of the eye lens.
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Rosh wears a pair of spectacles with power –2.25. Which of the following is correct about the lens?
Rosh wears a pair of spectacles with power –2.25. Which of the following is correct about the lens?
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The power of the glasses worn by Rishu is -3.5 D. What is the focal length of this lens?
The power of the glasses worn by Rishu is -3.5 D. What is the focal length of this lens?
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