The defect of vision in which a person cannot see nearby objects clearly is MCQ with Answer and Explanation

The defect of vision in which a person cannot see nearby objects clearly is
A. Astigmatism
B. Presbyopia
C. Hypermetropia
D. Myopia
Answer: Option C
Solution (By JKExamLibrary)
Hypermetropia (farsightedness): near point farther away, difficulty seeing close objects. Corrected with convex lens. Myopia: distant objects blurry. Presbyopia due to aging. Astigmatism due to irregular cornea.

This question belongs to: Science Physics

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Practice More Physics Questions

Question #1 Report Error
A force of 20 N acts on a body of mass 4 kg for 5 s. Change in momentum is
A. 100 kg m/s
B. 20 kg m/s
C. 80 kg m/s
D. 4 kg m/s

Correct Answer: Option A


Explanation:
Impulse = F×t = 20×5 = 100 N s = change in momentum.

This question belongs to: Science Physics
Question #2 Report Error
Which of the following is a derived unit?
A. Newton
B. Kilogram
C. Candela
D. Second

Correct Answer: Option A


Explanation:
Newton = kg·m/s², derived from base units. Kilogram, second, candela are base units. Derived units expressed in terms of base units. Joule, watt, pascal are also derived.

This question belongs to: Science Physics
Question #3 Report Error
The boiling point of water at high altitude is lower because
A. Atmospheric pressure is lower
B. Temperature is lower
C. Atmospheric pressure is higher
D. Gravity is less

Correct Answer: Option A


Explanation:
Boiling occurs when vapour pressure equals atmospheric pressure. At high altitude, atmospheric pressure is lower, so water boils at lower temperature. Pressure cooker increases pressure to raise boiling point for faster cooking.

This question belongs to: Science Physics