Question Text
Question 1 :
Which of the following phenomena of light are involved in the formation of a rainbow?
Question 2 :
What is the splitting of white light into components known as ?
Question 3 :
We cannot observe the path of light through a true solution. TRUE or FALSE?
Question 4 :
State TRUE or FALSE : Human eye is able to see nearby and distant objects clearly by changing the focal length of the eye lens using its power of accomodation.
Question 6 :
State TRUE or FALSE : Stars twinkle but not planets because planets are closer to earth and are seen as extended sources
Question 7 :
For parallel refracting surfaces, the emergent ray intersects the incident ray. State whether the statement is true or false.
Question 8 :
A person needs a lens of power -4.5 D for correction of her vision. What is the focal length of the corrective lens?
Question 9 :
How do we correct the sight of a person suffering from both myopia and hypermetropia?
Question 11 :
The eye lens forms an inverted real image of the object on the retina. State whether the statement is true or false.
Question 12 :
A person needs a lens of power -5.5 dioptres for correcting his distant vision. For correcting his near vision he needs a lens of power +1.5 dioptre. What is the focal length of the lens required for correcting distant vision
Question 13 : <img style='object-fit:contain' src='https://teachmint.storage.googleapis.com/question_assets/cbse_ncert/61b19d59273b230584979be9.JPG' />
In the above figure, the emergent ray is
Question 14 :
The least distance of distinct vision for a young adult with normal vision is
