HARD
10th CBSE
IMPORTANT
Earn 100

A convex lens of focal length 20 cm produce a magnified virtual as well as real images. Is this a correct statement? If yes, where shall the object be placed in each case to obtain these images?

Important Questions on Light - Reflection and Refraction

MEDIUM
10th CBSE
IMPORTANT
Under what condition in an arrangement of two plane mirrors, incident ray and reflected ray will always be parallel to each other, whatever may be angle of incidence. Show the same with the help of diagram.
EASY
10th CBSE
IMPORTANT
You are required to form an upright image which is: (i) enlarged, (ii) diminished by using a lens. State the nature of the lens in each case and draw a neat ray diagram in support of your answer.
EASY
10th CBSE
IMPORTANT
State whether u, v and f are positive or negative, when: the lens is convex and the image formed is real.
EASY
10th CBSE
IMPORTANT
State whether u, v and f are positive or negative, when: the lens is convex and the image formed is virtual.
 
EASY
10th CBSE
IMPORTANT
State whether u, v and f are positive or negative, when: the lens is concave.
EASY
10th CBSE
IMPORTANT
What do you understand by the term linear magnification of the lens? State two formulae for the linear magnification.
EASY
10th CBSE
IMPORTANT
What do you understand by the term power of a lens?