What should be the position of object for a concave mirror to get a magnification of?
(a) The object must be at the centre of curvature of concave mirror. The image formed is real, inverted and of the same size as the object. That is why magnification = – 1.
Where do you place an object to get magnification 1?
- Answer:
- Explanation:
- m = – (v/u) = – 1/2.
- ⇒ 1/f = 1/u + 1/v = 1/60.
- ⇒ u = – 120 cm.
- Hence, the objects be placed at 120 cm to get a magnification of 1/3.
What is the position of an object magnification?
Answer. When the object is placed at the 2F2 then the magnification of the image is -1 because the image is of equal size as that of the object, it is also real and inverted so a negative sign is used.
In which position of the object will the magnification be 1 in convex lens?
When the object is kept at 2f the magnification will be -1.
What is the minimum distance between an object and its real image in case of a concave mirror?
The minimum distance between an object and its real image in the case of a concave mirror is Zero.
What is the minimum limiting object distance for obtaining a real image?
Answer: The minimum distance between the object and images in case of a converging lens to form a real image is 4f, where f is the focal length of the given lens.
What is the maximum image distance in a convex mirror when object is real?
In a convex mirror image is formed only between focus and mirror. So the maximum distance is f i.e, 220=10cm.
What is the minimum and maximum distances between real object and real image produced by a convex lens?
Ray Optics and Optical Instruments. Show that the least possible distance between an object and its real image in a convex lens is 4f where f is the focal length of the lens.
When an object is kept at a distance of 30 cm?
Answer: Substitute f=−30cm and v=−15cm to find the value of u. Substitute, v=−15cm, u=−30cm and h1=5cm to find the value of h2. Therefore, the object should be placed 30 cm from the optical centre and the size of the image formed is 2.5 cm.
When an object is kept at a distance of 30 cm from a concave mirror the image is formed?
When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm from the mirror. When an object is kept at a distance of 30 cm from a concave mirror, the image is formed at a distance of 10 cm from the mirror.
When an object is kept at a distance of 20cm from a concave mirror?
When an object is kept at a distance of 20 cm from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of 4 m/s, the speed with which the image moves is us-20 (A) 10 cm/sec (B) 1 m/sec (C) 4 m/sec (D) 0.4 m/sec.
Which of the following mirror can form a real image of an object?
Plane mirrors and convex mirrors only produce virtual images. Only a concave mirror is capable of producing a real image and this only occurs if the object is located a distance greater than a focal length from the mirror’s surface.