Concave Mirror (50 mm)

Product Code : SCL-LAO-12094

Concave Mirror (50 mm) (SKU SCL-LAO-12094) is a converging spherical mirror in crown glass, 50 mm in diameter, with a rear aluminium coating and a nominal focal length of +100 mm. It focuses parallel light and forms real, inverted images that can be caught on a screen, the basis of the concave-mirror focal-length practical in Class 10–12 and of B.Sc. optics. The mirror is a Science Lab Supplies product, made at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and sold direct to schools, colleges, tender contractors and distributors.

Specifications

The concave mirror's full specification is given row by row. In essence, a 50 mm crown glass disc is ground to a concave spherical curve, coated on its back with vacuum-deposited aluminium under protective paint, and polished to 60/40 scratch-dig, giving a +100 mm focal length.

Applications and Experiments for the Concave Mirror (50 mm)

The mirror is fixed in a holder facing a source, and a screen or image pin is moved until the reflected image is sharp; the object and image distances then give the focal length. It is a basic item of school physics lab equipment in India for these reflection practicals.

• Class 10 science: approximate focal length by focusing a distant window or tree onto a screen such as the Laboratory White Viewing Screen.
• Class 12 physics: u–v method on an optical bench, locating the image with an Optics Experiment Parallax Pin.
• Showing how image size and nature change as the object moves from beyond the centre of curvature to inside the focus.
• B.Sc. optics: mirror equation and magnification of real images.

Never point the mirror at the sun to focus light onto paper or other flammable material.

Standard Scope of Supply

The concave mirror is delivered in a lint-free protective pouch together with a microfibre cleaning cloth and a technical data sheet giving curvature radius specifications. A mirror holder, screen and optical bench are not part of the item and can be priced on the same quotation.

Packing, MOQ and Lead Time

A quotation can be made out for a single concave mirror or for one per student group across a whole laboratory. Science Lab Supplies itemises the packing, delivery time and price for your chosen quantity, and holders or screens can be included on the same quotation.

Science Lab Supplies is a registered exporter with an Importer-Exporter Code, so it can ship to buyers in Sri Lanka, Vietnam, Malaysia, Peru, Egypt and Iraq. Get prices by writing via the contact page or submitting the enquiry cart; for tender purchases, refer to the lab tender page.

Frequently Asked Questions

What images does a concave mirror form?
It forms real, inverted images when the object is beyond the focal point and virtual, upright, magnified images when the object is closer than the focal point. Only the real images can be caught on a screen.

Can the image be projected onto a screen?
Yes. With the object placed outside the principal focus, the mirror forms a real, inverted image that can be focused directly onto a white screen and its distance read from the bench scale.

Does it fit standard optical bench holders?
Yes. The 50 mm diameter suits universal lens and mirror ring mounts on educational optical benches, as well as table-top V-slot holders that take 50 mm optics.

Is Science Lab Supplies the manufacturer or a trader?
Science Lab Supplies is the manufacturer; the concave mirror is ground, coated and packed at its own Saha, Ambala site. Pricing and delivery therefore come straight from the factory floor.

Related Mirrors, Lenses and Holders

These products partner the concave mirror in reflection and focal-length practicals, covering the opposite mirror type, a converging lens, a demonstration model, holders and benches. Any of them can be quoted together with the mirror for a school or college optics laboratory.

• Convex Mirror Optical — diverging 50 mm mirror with rear aluminium coating under backing paint.
• Concave Mirror — round 50 mm glass mirror with vacuum-coated silver backing.
• Convex Lens 50mm — biconvex crown glass lens forming real images at +100 mm focal length.
• Curved Mirror Effects Model — concave/convex acrylic model with three object markers.
• Lens Holder With Finished wood — seasoned hardwood base about 100 x 50 x 25 mm.
• Half-Frame Optics Bench — die-cast iron feet with manual levelling screws.
• Single Rod Optical Bench — heavy cast-iron feet fitted with levelling thumb screws.

Browse the full Light and Optics range, the Physics Lab range for mirrors and lens sets, or all physics lab equipment.

Last updated: 9 October 2026