Class 10ScienceThe Human Eye and the Colourful WorldMix Examples - The Human Eye and the Colourful World
MediumWhen one enters a dim-lit room from bright light,one is unable to see the objects in the room for some time. Explain why.
(N/A) In bright light,the iris contracts the pupil of the eye to allow less light to enter. When we enter a dim-lit room,the iris takes time to expand the pupil to allow more light to enter the eye. Thus,for a short duration,one is unable to see clearly in a dim-lit room.
Explore More
Similar Questions
Name the part responsible for the power of accommodation of the eye.
Easy
View Solution$(a)$ Demonstrate an activity with a well-labelled diagram to prove that white light is made up of seven colours.
$(b)$ Which colour of light bends least and which one the most while passing out from the prism? Also,state the reason for the same.
$(b)$ Which colour of light bends least and which one the most while passing out from the prism? Also,state the reason for the same.
Medium
View Solution$A$ person can see distant sign boards clearly but cannot read clearly a book which is at $25\, cm$ from his eye. Giving reason,identify the defect. Draw a labelled ray diagram to illustrate this defect and its correction.
Medium
View SolutionWhat is the cornea?
Easy
View SolutionThe eye defect known as $Presbyopia$ is corrected by using a $........$ lens.
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo