Why do we need screen to see a real image whereas virtual image can be seen without screen ?
we did physics practical in which I couldn't see the image formed by the convex lens without the screen . but I can see the virtual image formed by the plane mirror without a screen.
optics
asked 1 hour ago
Monkyman
262
add a comment |
we did physics practical in which I couldn't see the image formed by the convex lens without the screen . but I can see the virtual image formed by the plane mirror without a screen.
optics
asked 1 hour ago
Monkyman
262
Duplicate You do not need a screen to see a real image.
– Farcher
47 mins ago
add a comment |
we did physics practical in which I couldn't see the image formed by the convex lens without the screen . but I can see the virtual image formed by the plane mirror without a screen.
optics
asked 1 hour ago
Monkyman
262
we did physics practical in which I couldn't see the image formed by the convex lens without the screen . but I can see the virtual image formed by the plane mirror without a screen.
optics
optics
asked 1 hour ago
Monkyman
262
asked 1 hour ago
Monkyman
262
asked 1 hour ago
Monkyman
262
asked 1 hour ago
Monkyman
262
asked 1 hour ago
Monkyman
262
262
Duplicate You do not need a screen to see a real image.
– Farcher
47 mins ago
add a comment |
Duplicate You do not need a screen to see a real image.
– Farcher
47 mins ago
Duplicate You do not need a screen to see a real image.
– Farcher
47 mins ago
Duplicate You do not need a screen to see a real image.
– Farcher
47 mins ago
add a comment |
2 Answers
2
active
oldest
votes
You can see real images without a screen. Just look through a converging lens. If what you see is upside-down, then you are seeing a real image.
You are only able to use a screen to show where a real image is because light rays physically converge to a point in space.
When you use a screen, the screen "sees" the real image just as if your eye was where the screen was. Then we see what is reflected from the screen.
For the plane mirror you are just seeing a reflection, just as if the "mirror image" of your world was placed behind where the mirror if located without the mirror actually being there. Seeing things in a mirror is essentially just like seeing things normally.
answered 1 hour ago
Aaron Stevens
9,04531640
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
1
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
|
show 2 more comments
This might help.
Try focussing the sun with a convex mirror on your hand. You can not merely see it. You can feel it. That is a real image.
You cannot catch a virtual image on a screen. You can catch a real image on a screen. (Just as you could do it on your hand.) It is a more convenient way to see a real image.
I my school physics lab, we would use pointed needles to determine the distances. We have to adjust the position of the image pin to avoid parallax. When the room was a bit dusty we could actually see the real inverted image of the object pin from the side.
answered 1 hour ago
Dr S T Lakshmikumar
212
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can see real images without a screen. Just look through a converging lens. If what you see is upside-down, then you are seeing a real image.
You are only able to use a screen to show where a real image is because light rays physically converge to a point in space.
When you use a screen, the screen "sees" the real image just as if your eye was where the screen was. Then we see what is reflected from the screen.
For the plane mirror you are just seeing a reflection, just as if the "mirror image" of your world was placed behind where the mirror if located without the mirror actually being there. Seeing things in a mirror is essentially just like seeing things normally.
answered 1 hour ago
Aaron Stevens
9,04531640
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
1
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
|
show 2 more comments
You can see real images without a screen. Just look through a converging lens. If what you see is upside-down, then you are seeing a real image.
You are only able to use a screen to show where a real image is because light rays physically converge to a point in space.
When you use a screen, the screen "sees" the real image just as if your eye was where the screen was. Then we see what is reflected from the screen.
For the plane mirror you are just seeing a reflection, just as if the "mirror image" of your world was placed behind where the mirror if located without the mirror actually being there. Seeing things in a mirror is essentially just like seeing things normally.
answered 1 hour ago
Aaron Stevens
9,04531640
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
1
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
|
show 2 more comments
You can see real images without a screen. Just look through a converging lens. If what you see is upside-down, then you are seeing a real image.
You are only able to use a screen to show where a real image is because light rays physically converge to a point in space.
When you use a screen, the screen "sees" the real image just as if your eye was where the screen was. Then we see what is reflected from the screen.
For the plane mirror you are just seeing a reflection, just as if the "mirror image" of your world was placed behind where the mirror if located without the mirror actually being there. Seeing things in a mirror is essentially just like seeing things normally.
answered 1 hour ago
Aaron Stevens
9,04531640
You can see real images without a screen. Just look through a converging lens. If what you see is upside-down, then you are seeing a real image.
You are only able to use a screen to show where a real image is because light rays physically converge to a point in space.
When you use a screen, the screen "sees" the real image just as if your eye was where the screen was. Then we see what is reflected from the screen.
For the plane mirror you are just seeing a reflection, just as if the "mirror image" of your world was placed behind where the mirror if located without the mirror actually being there. Seeing things in a mirror is essentially just like seeing things normally.
answered 1 hour ago
Aaron Stevens
9,04531640
edited 1 hour ago
answered 1 hour ago
Aaron Stevens
9,04531640
answered 1 hour ago
Aaron Stevens
9,04531640
answered 1 hour ago
Aaron Stevens
9,04531640
9,04531640
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
1
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
|
show 2 more comments
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
1
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
I had practical class in which I could not see the real image until I put a screen there
– Monkyman
1 hour ago
1
1
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
@Monkyman If you had put your eye where the screen was you would have seen the real image. Screens are used to reflect that real image to your eyes.
– Aaron Stevens
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
but then for a virtual image on a plane mirror you need not put your eyes anywhere but you can still comfortably see the image . why is that so ? thanks for helping out
– Monkyman
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
@Monkyman I have added more about the plane mirror
– Aaron Stevens
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
but I still dont get how you have to place your eyes at the point of image formation for a real image to see the image and for a virtual image you can just stand anywhere and still see the image
– Monkyman
1 hour ago
|
show 2 more comments
This might help.
Try focussing the sun with a convex mirror on your hand. You can not merely see it. You can feel it. That is a real image.
You cannot catch a virtual image on a screen. You can catch a real image on a screen. (Just as you could do it on your hand.) It is a more convenient way to see a real image.
I my school physics lab, we would use pointed needles to determine the distances. We have to adjust the position of the image pin to avoid parallax. When the room was a bit dusty we could actually see the real inverted image of the object pin from the side.
answered 1 hour ago
Dr S T Lakshmikumar
212
add a comment |
This might help.
Try focussing the sun with a convex mirror on your hand. You can not merely see it. You can feel it. That is a real image.
You cannot catch a virtual image on a screen. You can catch a real image on a screen. (Just as you could do it on your hand.) It is a more convenient way to see a real image.
I my school physics lab, we would use pointed needles to determine the distances. We have to adjust the position of the image pin to avoid parallax. When the room was a bit dusty we could actually see the real inverted image of the object pin from the side.
answered 1 hour ago
Dr S T Lakshmikumar
212
add a comment |
This might help.
Try focussing the sun with a convex mirror on your hand. You can not merely see it. You can feel it. That is a real image.
You cannot catch a virtual image on a screen. You can catch a real image on a screen. (Just as you could do it on your hand.) It is a more convenient way to see a real image.
I my school physics lab, we would use pointed needles to determine the distances. We have to adjust the position of the image pin to avoid parallax. When the room was a bit dusty we could actually see the real inverted image of the object pin from the side.
answered 1 hour ago
Dr S T Lakshmikumar
212
This might help.
Try focussing the sun with a convex mirror on your hand. You can not merely see it. You can feel it. That is a real image.
You cannot catch a virtual image on a screen. You can catch a real image on a screen. (Just as you could do it on your hand.) It is a more convenient way to see a real image.
I my school physics lab, we would use pointed needles to determine the distances. We have to adjust the position of the image pin to avoid parallax. When the room was a bit dusty we could actually see the real inverted image of the object pin from the side.
answered 1 hour ago
Dr S T Lakshmikumar
212
answered 1 hour ago
Dr S T Lakshmikumar
212
answered 1 hour ago
Dr S T Lakshmikumar
212
answered 1 hour ago
Dr S T Lakshmikumar
212
212
add a comment |
add a comment |
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Duplicate You do not need a screen to see a real image.
– Farcher
47 mins ago