Percobaan Prinsip Kerja Lensa | Praktikum Fisika Dasar 2 | UPT Laboratorium Terpadu UHO

Summary

This video demonstrates an experiment on the principles of lens operation. The goal is to teach viewers about the workings of lenses, their components, and how to determine their focal length. The procedure is split into two stages: the first involves determining the focal length of a single lens using specific setups and measurements. The second stage combines two lenses to create a compound lens system, observing how the lens combination affects the image. The experiment encourages practical learning and precise measurements to better understand optical systems, providing clear steps for students to follow.

Takeaways

• 😀 The purpose of the experiment is to understand the working principle of lenses and determine their focal length.
• 😀 The experiment involves two main stages: determining the focal length of a single lens and then determining the focal length of a combined lens system.
• 😀 The materials needed for the experiment include a power supply, weak and strong positive lenses, a light box, a screen, connecting cables, supports, and a diaphragm.
• 😀 In the first stage, a weak positive lens is used to form a clear image by adjusting its position while maintaining the same distance between the object and the screen.
• 😀 Measurements are taken by varying the object-screen distance, first at 60 cm and then at 50 cm, to record the corresponding focal length of the lens.
• 😀 The second stage of the experiment involves using a combination of weak and strong positive lenses placed between the object and the screen.
• 😀 The goal is to adjust the lens positions to form a clear image and measure the object-image distance for the combined lens system.
• 😀 The object-screen distance is set to 70 cm during the second stage, with additional tests at 60 cm and 50 cm.
• 😀 Data from the experiment is recorded in an observation table, which includes measurements of the object-screen and object-image distances for both single and combined lenses.
• 😀 The experiment aims to help practitioners understand lens behavior and how to measure focal lengths accurately.
• 😀 The script ends with a conclusion, hoping the experiment is beneficial and clear for learners, with a musical outro.

Q & A

What is the main objective of this experiment?

The main objective of this experiment is for participants to understand the working principles of lenses, how to identify their components, and how to determine their focal length.

What materials are used in this experiment?

The materials used in the experiment include a power supply, weak positive lens, strong positive lens, lamp box, real precision screen, connecting cables, support stand, Pitt, and diaphragm.

What is the first stage of the experiment about?

The first stage involves determining the focal length of a single lens. This requires setting up an optical system and adjusting the position of the lens to obtain a sharp image on the screen.

How do you set up the optical system in Stage 1?

In Stage 1, the optical system is set up by placing the object with the lamp behind it, followed by a weak positive lens and a screen. The lamp is connected to the power supply using cables.

What should be done after setting up the optical system in Stage 1?

After setting up the system, measure the distance from the object to the screen, record it, and adjust the lens position until a sharp image is formed on the screen without changing the object-to-screen distance.

What are the specific object-to-screen distances used in Stage 1?

In Stage 1, the object-to-screen distances used are 60 cm and 50 cm, and the procedure should be repeated for each distance.

What is the second stage of the experiment about?

The second stage focuses on determining the focal length of a combined lens. It involves placing both the weak positive lens and strong positive lens between the object and the screen.

How do you set up the optical system in Stage 2?

In Stage 2, the object-to-screen distance is set to 70 cm, and both the weak and strong positive lenses are placed between the object and the screen. The lens positions are adjusted to produce a sharp image on the screen.

What measurements are taken during Stage 2?

During Stage 2, the distances between the object and the image formed by both the weak and strong positive lenses are measured and recorded.

What are the object-to-screen distances used in Stage 2?

In Stage 2, the object-to-screen distances used are 70 cm, 60 cm, and 50 cm, and the procedure is repeated for each of these distances.

What is the expected outcome of the experiment?

The expected outcome is for the participants to gain a deeper understanding of how lenses work and learn how to determine their focal lengths through hands-on experimentation.