Question

A piece of black tape is now placed over the upper half of the lens. Which of the follow is true. a. Only the lower half of the object (i.e., the arrow tail) will show on the screen. b.Only the upper half of the object (i.e., the arrow head) will show on the screen. c.The whole object will still show on the screen.

Answer 1

Option C

Step-by-step explanation:

As per the lens equation -

`(1)/(f) = (1)/(v) + (1)/(u)`

where f is the length of focus of the lens

and V is the distance of the image

and U is the distance of the object

In case of lenses covered with tape, will have no impact on the distance of the image and the object as focal length is property of glass of lens.

And also

`M = (h_i)/(h_o)`
`(h_i)/(h_o) = (-v)/(u)`

Since there is no change in the distance of the image and the object due to tape on lens, the image and object height will remain same.

Thus, option C is correct