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NEET UG PHYSICS MCQ: RAY OPTICS
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Medium
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Analyzing
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A student studying the similarities and differences between a camera and the human eye makes the following observations:
I. Both the eye and the camera have convex lenses.
II. In order to focus, the eye lens expands or contracts while the camera lens moves forward or backward.
III. The camera lens produces upside down real images while the eye lens produces only upright real images.
IV. A screen in camera is equivalent to the retina in the eyes.
V. A camera adjusts the amount of light entering in it by adjusting the aperture of the lens. In the eye, the cornea controls the amount of light.
Which of the above statements are correct?
I. Both the eye and the camera have convex lenses.
II. In order to focus, the eye lens expands or contracts while the camera lens moves forward or backward.
III. The camera lens produces upside down real images while the eye lens produces only upright real images.
IV. A screen in camera is equivalent to the retina in the eyes.
V. A camera adjusts the amount of light entering in it by adjusting the aperture of the lens. In the eye, the cornea controls the amount of light.
Which of the above statements are correct?
View answer and explanation
Correct option: C
Statements I, II, IV and V are correct
Option C (Statements I, II, IV and V are correct) is correct because these statements accurately describe the similarities and differences between a camera and the human eye.
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Statement-A: The minimum distance between an object and its real image formed by a convex lens is .
Statement-B: The distance between an object and its real image is minimum when its magnification is -1. Assertion: We cannot produce a real image by plane or convex mirrors under any circumstances.
Reason: The focal length of a convex mirror is always taken negative. If both the object and image are at infinite distance from a refracting telescope its magnifying power will be equal to
Statement-B: The distance between an object and its real image is minimum when its magnification is -1. Assertion: We cannot produce a real image by plane or convex mirrors under any circumstances.
Reason: The focal length of a convex mirror is always taken negative. If both the object and image are at infinite distance from a refracting telescope its magnifying power will be equal to