The focal length of a convex lens is 50 cm. Its power is – McqOptions

MCQOPTIONS

1.	The focal length of a convex lens is 50 cm. Its power is
A.	+ 50 D
B.	- 50 D
C.	+ 2 D
D.	- 2 D
Answer» D. - 2 D

Discussion

No Comment Found

Related MCQs

<b>A Swimming pool </b>looks shallower than it really is, when see by a person standing <b>outside</b> near it, because of the phenomenon of
A child is standing in front of a <b>magic mirror</b>. She finds the image of her <b>head bigger,</b> the middle portion of her body of the same size and that of the legs <b>smaller. </b>The following is the order of combinations for the<b> magic mirror</b> from the top.
Which one of the following is correct?<b> Lightning is formed, </b>when
Which one among the following is the correct order of <b>power consumption</b> for light of equal intensity ?
<b>Soap bubble</b> looks coloured due to
<b>Rainbow </b>is formed due to
A student finds the writing on the black board as <b>blurred and unclear </b>when sitting on the last desk in a classroom. However, he sees it <b>clearly</b> when sitting on the front desk. Student suffers from a <b>vision defect </b>known as
When the distance between the <b>object</b> and the <b>plane mirror</b> increases
<b>Butter paper</b> is an example of ...........object.
The <b>sun</b> is seen before the actual sun rise because of .........