At what distance does a concave mirror focal length 15cm?
U=V & Ans. 50 m.
When an object is placed at a distance of 40 cm from a concave spherical mirror is 1/2 Where should the object be placed to get a magnification of 1 3?
Or When an object is placed at a distance of 40 cm from a concave spherical mirror, the magnification produced is 1/2, where should the object be placed to get a magnification of 1/3? [Ans. – 80 cm.
When an object is placed at a distance of 50cm from a concave mirror the magnification produced is 1 2?
Hint: A concave mirror of certain focal length is used to get a magnification of −12 when placed at 50cm from the mirror. We can find the focal length using the mirror formula and hence, find the object distance to get the magnification of −15.
When an object is placed at a distance of 50 cm from a convex mirror?
A plane mirror is introduced covering the lower half of the convex mirror. If the distance between the object and the plane mirror is 30 cm, it is found that there is no gap between the images formed by the two mirrors.
When an object is placed at 2F of a convex lens its image is formed?
An object placed at 2F of a convex lens will produce an image at 2F. As you can clearly see in the diagram that the image formed is real and inverted.
When an object is placed at infinite distance is image formed by a convex lens is?
The image of an object which is placed at an infinite distance will be formed at the focus in case of convex and concave mirrors whereas, it is equal to infinity in the case of plane mirror.
For what distance of object image is formed at infinite distance?
In optics and photography, infinity focus is the state where a lens or other optical system forms an image of an object an infinite distance away. This corresponds to the point of focus for parallel rays. The image is formed at the focal point of the lens.
Which combination image is formed at infinite distance?
Solution : Convex lens forms the image at I1. I1 is at the second focus of convex lens. Size of I1=2cm.
What happened if the object is at infinity?
When an object is at infinity,then the rays coming from it is almost parallel to principal axis. Hence the image formed is at focus.
What is the magnification when object is at infinity?
When the object is put at infinity, then the ray of light will pass from the focus point. So in this case, the object is at infinity position, the magnification will be -1.