Question Text
Question 1 :
An interesting feature of a kaleidoscope is that you will never see the same pattern again. Is it TRUE OR FALSE?
Question 2 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on Marble floor?
Question 3 :
The objects which emit their own light are known as _______ objects?
Question 4 :
Part of the eye which controls the light entering is called
Question 5 :
The objects which shine in the light of other objects are called illuminated objects. Is it TRUE OR FALSE?
Question 6 :
What is the most comfortable distance at which one can read with a normal eye?
Question 7 :
How many times is a ray of light reflected by two plane mirrors placed parallel and facing each other?
Question 8 :
The angle between incident ray and reflected ray is $60^\circ$. What is the value of angle of incidence?
Question 9 :
Mention whether regular or diffused reflection will take place when a beam of light strikes on White Chalk powder that is used in school?
Question 12 :
<img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b1d0faf59b460d7261f3a0.PNG' />
Refer to the above figure. Boojho stands at A just on the side of a plane mirror as shown in figure. Can he see the image of objects situated at P, Q and R?
Question 13 :
The most popular resource for visually challenged persons is Braille, it was developed by?
Question 14 :
Which part of the eye gets affected if someone is suffering from cataract?