Concave Mirror
Product Code : SCL-LAO-11236
Quick answer: A concave mirror is a converging spherical mirror whose inward-curved reflecting surface brings parallel rays to a principal focus. In the lab it is used to find focal length, form real images on a screen, show a magnified virtual image when the object is inside F and verify the mirror formula. Diameters are 50 mm and 75 mm. Lab Exports manufactures it in Delhi for schools, colleges and universities.
Specifications
| Parameter | Detail |
|---|---|
| Mirror type | Concave (converging) spherical mirror |
| Diameters | 50 mm or 75 mm (nominal) |
| Concepts shown | Reflection, convergence, focal length, magnification, image formation |
| Supplied as | One mirror in the selected diameter |
Radius of curvature, focal length and mounting are confirmed with the quotation.
How the concave mirror experiment is done
For a spherical mirror the focal length is half the radius of curvature, f = R/2. With the object beyond the centre of curvature C the image is real, inverted and smaller; between C and F it is real, inverted and enlarged; inside F it becomes virtual, upright and magnified, which is why concave mirrors serve as shaving and make-up mirrors.
- Face the mirror towards a distant bright object such as a window and move a screen until a sharp image forms; the mirror-to-screen distance is an estimate of f.
- Mount the mirror in a holder on an optical bench with an object needle or illuminated object in front of it.
- Place the object beyond the estimated focus and locate the real image with a screen or by the no-parallax method.
- Record u and v for several positions and calculate f from the mirror formula 1/v + 1/u = 1/f.
Key features
- Nominal 50 mm and 75 mm diameters for different mirror holders and bench layouts.
- Converging reflecting surface brings parallel rays to a real focus in front of the mirror.
- Shows real, inverted images of changing size as well as an upright, magnified virtual image.
- Supports the distant-object, screen and no-parallax methods for focal length.
- Reusable teaching component when the reflecting surface is kept clean and dry.
Documentation and supply
Most Lab Exports products carry a one-year manufacturer warranty.
Lab Exports manufactures the concave mirror at its works in Laxmi Nagar, Delhi, and supplies it to schools, colleges and universities in India and 60+ countries, handling the export documents for each shipment. More about the company is on the About Lab Exports page.
Related Light and Optics products
- Concave Lens (SCL-LAO-11235)
- Convex Mirror (SCL-LAO-11237)
- Convex Lens (SCL-LAO-11234)
- Ray Optics Kit (SCL-LAO-11229)
- Magnifier Glass 3" (SCL-LAO-11225)
- Lens Holder V Shape (SCL-LAO-11253)
The full range is in the Light and Optics section of the Physics Lab range.
Frequently asked questions
What kind of image does a concave mirror form?
It depends on the object position: beyond the focus the image is real and inverted, while an object inside the focus gives a virtual, upright and magnified image.
How is the focal length of a concave mirror found in the lab?
Roughly by focusing a distant object on a screen, and accurately by measuring object and image distances and applying the mirror formula 1/v + 1/u = 1/f.
What is the price of the concave mirror?
Prices are not published on the website. Add the concave mirror to the Enquiry Cart with the Add To Cart button on this page, or email [email protected] with the house code SCL-LAO-11236 and the quantity, to receive a quotation.
Does Lab Exports manufacture the concave mirror?
Yes. Lab Exports manufactures the concave mirror at its works at 11/315, Lalita Park, Laxmi Nagar, Delhi 110092, under house code SCL-LAO-11236.
Request a quote
Email [email protected] with the house code SCL-LAO-11236 and the quantity, or add the concave mirror to the Enquiry Cart with the Add To Cart button on this page. Tender buyers can also see the Tenders and OEM page.
