Where should object be placed in front of concave mirror of focal length 20cm so as to obtain a real image two times magnified?

Answer Expert Verified. so the object must be placed 30 cm from the mirror.

Where should an object be placed in front of concave mirror of focal length f so that the image to be of the same size as that of the object?

Therefore, the correct option C i.e. the object should be placed at the center of curvature of the concave mirror so that image is the same size as the object.

Where should an object be placed before a concave mirror of focal length 20cm so that a real image is formed at a distance of 50 cm from it?

▶▶So, the object must be placed between Centre of Curvature and Focus at the distance of 30 cm from the mirror.

Where must you place an object in front of a concave mirror with focal length f so that the image is upright and twice the size of the object where is the image?

A concave mirror forms virtual, upright and magnified image for the objects positioned within the focal point of the mirror. The virtual image forms behind the mirror.

Where should an object be placed in front of a concave mirror?

The object should be placed within the focus (between the pole and the focus) and in front of the concave mirror in order to obtain a virtual, erect and magnified image.

Where should an object be placed in front of a concave mirror so as to get unit magnification?

It should be placed at a centre of curvature to get unit magnification . An object should be placed at the centre of curvature for an image to form the light while coming for infinity will an image in front of the concave mirror.

Where should the object be placed in front of a concave mirror so that the image obtained is real inverted & same size as that of object?

Answer: The object should be placed at the centre of curvature of the concave mirror to obtain an image of same size and real image.

Where should the object be placed in front of a concave mirror?

An object should be placed within the focus (between the pole and the focus) and in front of the concave mirror to obtain a virtual, erect and magnified image.

Where must an object be placed in front of a concave mirror of radius R in order for the image to be superimposed upon the object is this image real or virtual?

Hence, for the image to be superimposed upon the object, the object should be placed at the radius of curvature.

Where should an object be placed in front of a concave mirror to obtain an image which is real inverted and reduced in size?

For real, inverted and reduced image, the object must be placed beyond the centre of curvature.

Where should an object be placed to in front of a concave mirror to obtain a magnification of 1 What is the nature and size of image?

centre of curvature
(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 should an object be placed in front of a concave mirror to obtain an image erect and bigger in size?

In a concave mirror an erect image will be obtained when the object is placed between pole and focus of the mirror.

What determines the size of image formed by a concave mirror?

It mainly depends on the distance between the object and the mirror. Concave mirrors form both real and virtual images. When the concave mirror is placed very close to the object, a virtual and magnified image is obtained and if we increase the distance between the object and the mirror, the size of the image reduces and real images are formed.

What are the conventions of measuring distance from mirror?

The conventions are as given below: The object is always placed to the left side of the mirror. This means that the light from the object falls on the mirror from the left-hand side. All the distances which are parallel to the principal axis are measured from the pole of the mirror.

How far out of the focal point is the object magnified?

Object is magnified -4 times, so it is one quarter focal length out of the focal point. After moving the object 3cm out, it is magnified -3 times, so it is a third of the focal length out of the focal point.

What is the relationship between object distance and focal length?

This is the relationship involving the magnitude of distances. In a spherical mirror, the distance of the object from its pole is called the object distance (u) and the distance of the image from the pole is called the image distance (v). As mentioned earlier the distance of the principal focus from the pole is called the focal length (f).