• Optically worked
• 50 mm diameter
• 150 mm focal length
• Made in India
• Supplier: Labtex Bangladesh.

Concave Optical Lens 50mm Double – Precision Lens for Light Experiments and Optical Research

The Concave Optical Lens 50mm Double is a high-quality laboratory lens designed for optical experiments, light refraction studies, and educational demonstrations. Made from optically clear glass, this lens provides precise light control and distortion-free imaging. Because of its double concave design, it diverges light rays passing through it, creating clear and measurable optical effects that are essential for physics and optics experiments.

This 50mm double concave lens is carefully polished and edge-finished to ensure maximum accuracy in classroom or laboratory applications. It’s widely used in schools, colleges, universities, and research laboratories for demonstrating the behavior of light through lenses. The lens’s uniform curvature allows consistent results in experiments involving image formation, focal length determination, and ray tracing.

Its durable glass construction ensures excellent performance and resistance to scratches or minor impacts. Furthermore, the lens has a 50mm diameter, which makes it ideal for use with various optical benches, light sources, and spherometers used in scientific experiments.

Key Features

• High-quality double concave lens made from optically clear glass
• 50mm diameter suitable for standard laboratory setups
• Provides accurate light divergence and consistent refraction results
• Perfect for physics, optics experiments, and classroom demonstrations
• Smooth, polished edges for safety and precision alignment
• Durable construction ensures long-term usability
• Compatible with optical benches and educational lab kits

Applications

The Concave Optical Lens 50mm Double is widely used in:

• Educational institutions for teaching the principles of optics
• Physics laboratories for experiments on image formation and ray tracing
• Optical workshops for light control and testing purposes
• Research facilities studying refraction, focal length, or image correction

Because it’s a core component in light and image experiments, it helps students visualize diverging light behavior and understand fundamental optical theories like Snell’s Law and lens equations.

How to Use It

1. Place the concave lens on an optical bench or a flat surface.
2. Position a light source or ray box in front of the lens.
3. Observe how the light rays diverge after passing through the lens.
4. Adjust distances to measure focal length or image distance.
5. Record results and compare them with theoretical predictions.

For best results, ensure the lens is clean and free from fingerprints or dust. Use a soft, lint-free cloth to wipe gently before each use.

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Discussion About Analog Galvanometer

An analog galvanometer is an instrument used to detect and measure small electric currents. It works based on the principle that a current-carrying coil placed in a magnetic field experiences a torque that causes it to rotate. Here are the key components and concepts related to an analog galvanometer:

Components of an Analog Galvanometer:

1. Coil: A loop or coil of wire through which the current flows.
2. Magnetic Field: Typically provided by permanent magnets, creating a magnetic field in which the coil rotates.
3. Pointer and Scale: A needle or pointer attached to the coil, which moves over a calibrated scale to indicate the amount of current.
4. Damping Mechanism: Usually made of air or fluid, this slows the movement of the pointer to prevent oscillations and allows for steady readings.

Working Principle:

• When an electric current flows through the coil, it generates a magnetic field that interacts with the external magnetic field.
• This interaction creates a torque that causes the coil (and thus the pointer) to rotate.
• The angle of rotation is proportional to the amount of current flowing through the coil, allowing for measurement.

General Applications of Analog Galvanometer:

• Current Measurement: Used in laboratories and educational settings to measure small currents.
• Calibration: Often used to calibrate other measuring instruments.
• Testing Equipment: Used in various electronic testing devices.

Advantages:

• Simple and effective for detecting small currents.
• Provides visual feedback through the movement of the pointer.

Limitations:

• Limited to low current measurements.
• Sensitivity can be affected by external magnetic fields and mechanical vibrations.
• Requires manual interpretation of the scale, making it less precise than digital instruments.

Analog galvanometers are valuable for understanding basic electrical principles and are often used in educational contexts to illustrate concepts of electromagnetism.

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