Question

Investigate. In the given figure the angle measured is \[{30^ \circ }\]. Look at the same figure through a magnifying glass. Does the angle become large? Does the size of the angle change?

Answer 1

Hint:Here we use the concept of measuring an angle. Also, from the knowledge of magnifying glass that is it magnifies an image seen through it we find if the angle is magnified as well or not.
* An angle is defined as a figure formed at the intersection of two rays and it is measured in radians or degrees.
* Magnifying glass is an object having a convex lens which is used to magnify or see a larger image of an object that is placed under it.

Complete step-by-step answer:
We can see from the figure that the angle measured is \[{30^ \circ }\].
If we look at this figure from a magnifying glass then the whole image gets magnified, so the figure is the same but just gets huge in size.

When we use magnifying glass it magnifies the whole image so the whole image is shifted to a greater or larger axis but the angle at which the ray meets the point will not be changed.
If we measure the angle using the protractor (or D) then we can see that the angle does not become any larger or the size of the angle does not change.
So, the answer to does the angle get larger is NO
Answer to does the size of the angle change is NO

Note:Students might mistake the concept of magnifying glass wrong because it says it magnifies the image seen through it which clearly means the whole image will shift to a large axis not only the ray, so the angle must remain the same.