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Briefing video
A convex lens is able to produce real and virtual images based on the position of the object from the lens, the shape of the glass affects the way the glass is refracting the light, hence producing an image with different types and sizes. Because of the geometrical shape of the glass (Convex lens), the glass has a real focus and thus is able to produce real images, an image that can be projected on the screen. In this experiment, you are going to determine the focal length of the convex shape glass.
Objective
Objective
To determine the focal length of a convex lens using magnifying glass
Apparatus
Apparatus
Torchlight
Magnifying lens
Marker
Ruler/measuring tape
MAGNIFYING LENSE
MEASURING TAPE
TORCHLIGHT
WHITE BOARD MARKER PEN
Guide
Guide
You are going to draw an object on the torchlight (eg. arrow, sticker etc.)
the distance of the object to the lens is the object distance
Shine the light through the lens and point it toward a screen (you can use a wall as your screen)
An image of the object will be formed on the screen
Adjust the distance of the lens to the wall (keep the object distance fixed) until a sharp image is observed.
Measure the image distance and the height of the image
Vary the object distance to get its corresponding image distance and image height
record the image distance and the image height in a table
use appropriate equation graphing tools to analyze your result.
State the significance of your finding
List of Experiment
List of Experiment
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