Identify the incorrect statement regarding the human eye. MCQ with Answer and Explanation

Identify the incorrect statement regarding the human eye.
A. The cornea provides most of the eye's refractive power.
B. The retina acts as the screen where images are formed.
C. The pupil regulates the amount of light entering the eye.
D. The image formed on the retina is virtual and erect.
Answer: Option D
Solution (By JKSSB Mock Tests)
The eye lens is a convex (converging) lens. It converges light rays to form a real and inverted image on the retina. The brain processes this signal and flips it so we perceive the world as erect. All other statements are functionally correct. The cornea does indeed do about two-thirds of the focusing.

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Practice More Physics Questions

Question #1
A force of 10 N acts on a body of mass 2 kg for 1 s. Change in momentum is
A. 5 kg m/s
B. 20 kg m/s
C. 10 kg m/s
D. 2 kg m/s

Correct Answer: Option C


Explanation:
Impulse = F t = 10 N s = change in momentum.

This question belongs to: Science Physics
Question #2
Escape velocity of a body from Earth is 11.2 km/s. For a planet with mass 9 times Earth and radius same, escape velocity is
A. 33.6 km/s
B. 3.73 km/s
C. 11.2 km/s
D. 22.4 km/s

Correct Answer: Option A


Explanation:
v_esc ∝ √M. M'=9M => v'=3×11.2=33.6 km/s.

This question belongs to: Science Physics
Question #3
Young's double slit: fringe width β = λD/d. If d doubled, β becomes:
A. Four times
B. Half
C. Double
D. Same

Correct Answer: Option B


Explanation:
β ∝ 1/d. If d' = 2d, β' = β/2. Fringe width decreases with increased slit separation. Memory aid: 'β ∝ 1/d; wider slit separation ⇒ narrower fringes'. Wave optics proportionality frequently tested in competitive exams.

This question belongs to: Science Physics