Question Text
Question 2 :
Which of the following is a correct way by which we can take care of our eyes?
Question 3 :
Which of the following part protects the eye and gives it shape?
Question 4 :
If an object is placed symmetrically between two plane mirrors inclined at an angle of $72^{\circ}$, then the total number of images formed is:<br/>
Question 5 :
Which of the following is not the proper use of a periscope?<br/>
Question 6 :
What will happen if our eyes are exposed to very dim light?<br>
Question 8 :
The curvature of the eye lens can be modified by _____ .<br/>
Question 10 :
Splitting of light into its constituent colours is known as :<br/>
Question 11 :
Inner side of the cylindrical tube of a periscope is blackened to avoid:
Question 14 :
The nature of image formed on theretina of human eye is:
Question 15 :
Why do we study the Dispersion phenomenon using a glass prism and not a glass slab ?
Question 16 :
The human eye part which can be used again and again for forming different images is called
Question 18 :
The colour are characterised by which of following character of light.
Question 21 :
The cells in the retina that are able to distinguish between different colours are :
Question 22 :
The  idea of multiple images formed by plane mirrors is used in:
Question 23 :
Fill in the blank:<br/>Plane mirrors are arranged _______ to each other to get infinite number of images.
Question 25 :
For a normal eye, in case of an adult, the least distance of distinct vision is: