Answer
A camera or slide projector uses a converging lens because it is necessary to form an inverted and real image of the object on the film or sensor. A converging lens bends light rays inwards towards the axis of the lens, which allows it to focus light from a distant object onto a small film or sensor.
The objective of a microscope or telescope must be a converging lens (or a converging mirror) because it is necessary to form an inverted and magnified image of the object being viewed. A converging lens or mirror bends light rays inwards towards the axis of the lens, which allows it to gather light from a distant object and form an image of it.
The eyepiece of a telescope can be either converging or diverging because it is used to magnify the image formed by the objective. A converging eyepiece bends light rays inwards towards the axis of the lens, which increases the magnification of the image. A diverging eyepiece bends light rays outwards away from the axis of the lens, which decreases the magnification of the image. This allows the viewer to adjust the magnification of the image to their preference.
Work Step by Step
A camera or slide projector uses a converging lens because it is necessary to form an inverted and real image of the object on the film or sensor. A converging lens bends light rays inwards towards the axis of the lens, which allows it to focus light from a distant object onto a small film or sensor.
The objective of a microscope or telescope must be a converging lens (or a converging mirror) because it is necessary to form an inverted and magnified image of the object being viewed. A converging lens or mirror bends light rays inwards towards the axis of the lens, which allows it to gather light from a distant object and form an image of it.
The eyepiece of a telescope can be either converging or diverging because it is used to magnify the image formed by the objective. A converging eyepiece bends light rays inwards towards the axis of the lens, which increases the magnification of the image. A diverging eyepiece bends light rays outwards away from the axis of the lens, which decreases the magnification of the image. This allows the viewer to adjust the magnification of the image to their preference.
