Imagine the following situation. An object is placed behind a lens. You stand in
ID: 1487470 • Letter: I
Question
Imagine the following situation. An object is placed behind a lens. You stand in front of the lens on the other side so that you cannot see the object directly. You can only see the image. You don't know anything about the object except what you can see in the image. Let's also say that you can't move from your position. You can't come closer to the lens or move further away. How would you be able to tell whether the image is a real or virtual one based only on what you can see? Select all that apply. A: if the rays of light are actually coming from the object, it is real. if they only appear to come from the object, it is virtual. B: if the image is upright, it is virtual. If it is inverted, it is real. C: If you can see the image, it is a real image. If you cannot see the image, it is a virtual image. D: If the image appears to be further away than the lens, it is virtual. If it appears to be closer than the lens, it is real. E: There is no way to tell whether the image is virtual or real.
Explanation / Answer
SEE AS GIVEN WE CANNOT SEE THE IMAGE DIRECTLY WHICH MEANS WE CANNOT BE SURE IN WHICH DIRECTION THE OBJECT HAS BEEN KEPT AND WHAT THE OBJECT IS OTHERWISE IF KNOWN IT CAN BE FOUND OUT BY OPTION B, BUT IN THIS QUESTION AS WE DONT KNOW THE OBJECT WE CANNOT DETERMINE THE REAL OR VIRTUAL IMAGE, HENCE THE CORRECT OPTION WILL BE E.