Where should an object be placed in order to use a convex lens as a magnifying glass?

Where should an object be placed in order to use a convex lens as a magnifying glass?

A convex lens acts as a magnifying glass, when it forms a virtual, erect and magnified image of an object. For this, the object is to be placed between principal focus and optical cantre of the lens.

Where should the object be placed in front of convex lens so that magnification is less than 1?

The object should be placed between f and 2f of a convex lens to obtain a real, inverted and magnified image.

Where should an object be placed in front of convex lens to get a real image of same size of object?

Where should an object be placed in front of a convex lens to get a real image of the size of the object? Answer: At twice the focal length, the image formed by the convex lens is real and of the same size as the object.

At what distance in front of a concave mirror should an object be placed to get its virtual and erect image?

Hence, to obtain an erect image of an object from a concave mirror of focal length 15 cm, the object must be placed anywhere between the pole and the focus. The image formed will be virtual, erect, and magnified in nature, as shown in the given figure.

What is the position of the image when an object is placed at a distance of 20cm?

Solution. When an object is placed at a distance of 20 cm from a concave mirror of focal length 20 cm, the position of the image is at infinity. The reason being, the image formed by a concave mirror is at infinity when an object is placed at its focus.

What is the position of image when an object is placed at a distance of 10cm?

Solution. Therefore, the position of image will be at infinity.

When an object is placed 20 cm from a concave mirrors a real image magnified 3 times is how do you find a object be placed to get a virtual image 3 times the height of the object?

Solution. (a)We have to find the focal length of the mirror. Therefore, the distance of the image ‘v’ is −60 cm. Thus, the focal length of the concave mirror is 15 cm.

How far should an object be placed from the pole?

The object should be placed 100 cm to the left of the mirror.

At what distance from a concave mirror of focal length 10 cm should an object be placed so that?

So At -6.7cm distance from a concave mirror of focal length 10 cm should an object 2 cm long be placed in order to get an erect image 6 cm tall.