Real Life Experiments Using Convex Lens
Following are some real life experiment which can be performed using convex lens.
Experiment 1: Measurement of Focal length
Setup:
On a stable surface, carry and place a lens holder to hold the lens. After placing the lens holder, adjust the lens in the holder. Now, on one side of the lens place a source of light and on the other side place a screen.
Procedure:
- First of all, to get a clear and sharp image of the light source on the screen. To achieve this make adjustment in distances between the lens and the screen.
- Next, make sure that the image is fully clear and focused.
- Now, calculate the distance between(u) the lens and the source of light and the distance(v) between the lens and the screen.
Calculation:
calculate the focal length using the following formula
1/f = 1/v – 1/u
Result:
The obtained value is the measurement of focal length of the convex lens.
Experiment 2: Magnification Experiment
Setup:
On a stable surface, carry and place a lens holder to hold the lens. After placing the lens holder, adjust the lens in the holder. Now, on one side of the lens place a source of light and on the other side place a screen.
Procedure:
- Make a measurement of height(h) of the object and the measurement of height(h’) of the image formed.
- Now, to calculate the magnification apply the formula
m = h’/h
Result:
If the magnification value m > 1, then the image is magnified. If the magnification value m < 1, the image is smaller and not magnified.
Experiment 3: Lens Power Calculation
Setup
On a stable surface, carry and place a lens holder to hold the lens. After placing the lens holder, adjust the lens in the holder. Now, on one side of the lens place a source of light and on the other side place a screen.
Procedure:
- Make a measurement of focal length(f) of the lens and this calculation can be done using Focal Length experiment.
- Now, to calculate the power of lens apply the formula
P = 1/f
Result:
If the power of the lens is higher, then it have higher focusing ability. If the power of the lens is lower, then it have lower focusing ability.
Also, Check
Uses of Convex Lens
Convex lens is a type of transparent lens which is thicker at the center and thinner at the edges. It cause the parallel rays of light to converge as they pass through it. It is also referred to as a converging lens. Convex lens is used in magnifying glass, telescopes, camera lenses, and curing hypermetropia. In this article, we will learn the functions of convex lenses in detail.