1. The term “accommodation” as applied to the eye, refers to its ability to:

2. How eyes adjust in order to focus the image of near or distant objects on retina?

3. A person cannot see the distant objects clearly (though he can see the nearby objects clearly). He is suffering from the defect of vision called:

4. A got his eye tested. The optician’s prescription for the spectacles was:

Left eye: −3 D
Right eye: −3.50 D
The person is having a defect of vision called:

5. Figure a, b, c respectively; indicate the point in case of

6. A: Astigmatism usually is caused by an irregularly shaped cornea.
B: Rainbow is the natural phenomenon in which dispersion takes place.

7. Having two eyes facilitates in:
A: Increasing the field of view
B: Bringing three dimensional view
C: Developing the concept of distance/size.
Then the correct option is/are:

8. Blue colour of the sky is due to the phenomenon of:

9. When a beam of white light falls on a glass prism, the colour of light which will deviate least is:

10. A man finds it difficult to read the odometer on the dashboard of the car but is able to clearly read a distant road sign. Which of the following statement is correct about this man?

11.  
Badal Appeared In Class Test But He Confused To Know The Incorrect Statement. Would You Help Him To Know That?

12.  
Sunset Is Red Because At That Time The Light Coming From The Sun Has To Travel:

13.  
Student Sitting On The Last Bench Can Read The Letters Written On The Blackboard But Is Not Able To Read The Letters Are Written In His Textbook. Which Of The Following Statements Is Correct?

14.  
The Danger Signals Installed At The Top Of Tall Buildings Are Red In Colour. This Can Be Easily Seen From The Distance Because Among All The Other Colours, The Red Light:

15.  
The Animals Of Prey Have

16. When white light enters a glass prism from air, the angle of deviation is least for

17. The deflection of light by minute particles and molecules of the atmosphere in all directions is called ____________ of light.

18. A person gets out in the sunlight from a dark room. How does his pupil regulate and control the light entering in the eye?

19. A person went for a medical check-up and found that the curvature of his eye lens is increasing. Which defects is he likely to suffer from?

20. Which of the following phenomena of light are involved in the formation of a rainbow?