Advertisements
Advertisements
Question
A ray of light incident at the optical centre of lens, passes undeviated after refraction.
Options
True
False
Solution
This statement is true.
APPEARS IN
RELATED QUESTIONS
What is a lens?
State the condition when a lens is called an equi-convex or equi-concave.
Study the diagram shown in Fig. 5.56
where is the object located?
Study the diagram shown in Fig. 5.56
Where is the image formed?
(a) Draw a sketch to show how a lens is able to produce an image of the sun on a paper screen.
(b)(i) Would you regard the rays from the sun as being divergent, parallel or convergent?
(ii) What is the name given to the point where such rays meet after they have passed through the lens?
(iii) How does the image of the sun sometimes burn a paper screen?
In the following diagram , the object and the image formed by the respective lenses are shown. Complete the ray diagram, and locate the focus. Find the focal length of the lens.
Make the correct choices in the following items :
A lens used as a magnifying glass
(i) ls a diverging lens
(ii) Produces a virtual image
(iii) ls placed with the object nearer the lens than the principle focus
Define the term 'focus' of a lens.
Name the subjective property of light related to its wavelength.