HelpContactFor teachers and institutes
>_StemPy Lab
Mock TestsClassesGroups

>_StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

  • Physics
  • Chemistry
  • Mathematics
  • Biology
  • Python Programming
  • Statistics & Data Science
  • Classes
  • Groups

Practice

  • Problems
  • Quizzes
  • Mock Tests
  • Question Sets
  • Exams
  • Certificates
  • Python Labs
  • AI Practice Generator
  • Student-Created Tests

Community

  • Discussions
  • Resources
  • Notes
  • Blog

Account

  • Dashboard
  • My Content
  • Profile
  • Log in
© 2026 senLearn. All rights reserved.HelpAboutContactPrivacy PolicyTerms of UseRefund Policy
  1. Problems
  2. /Optics
  3. /The Human Eye and Vision

The Human Eye and Vision

Physics
+ Upload a Problem
More in OpticsReflection of LightRefraction of LightLenses and Optical InstrumentsThe Human Eye and VisionWave OpticsPrisms and Dispersion of LightLight in the Atmosphere
12 problems
Type:
1.
A girl wears spectacles of power -2.25 D.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Hard
2.
Two long-sighted people want to read at 25 cm.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Hard
3.
A man cannot see clearly anything closer than 110 cm.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Medium
4.
The far point of a student is 3.5 m away. Find the power of the lens that corrects her eye.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Medium
5.
A student can see clearly only up to 65 cm.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Medium
6.
Three people have trouble with their eyes.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Easy
7.
The ciliary muscles of an old man can raise the power of his eye lens to 42.8 D, and no more.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Medium
8.
The lens of an eye is 2.5 cm from the retina.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Medium
9.
A boy reads a book held 25 cm away, then looks up at a kite 60 m away.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Easy
10.
A lamp post 4.2 m tall stands 15 m from you.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Medium
11.
After a film, you walk out of a dark cinema hall into bright sunlight.
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Easy
12.
Name the part of the eye that does most of the bending of light, controls the amount of light that…
High School (9–10) · The Human Eye and VisionStemPy LabStemPy Lab
Easy