Law of Reflection of Sound Apparatus
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Product Code : SCL-PL-12060
Law of Reflection of Sound Apparatus (SKU SCL-PL-12060) lets students show that sound obeys the same law of reflection as light: two pivoting hollow tubes aim sound at a central reflecting board, and a 0–180° protractor base measures the angles of incidence and reflection. It suits school science and college physics labs. The apparatus is manufactured at the Science Lab Supplies factory on Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and schools, colleges, tender contractors and distributors buy it there without an agent.
Specifications
Base, tube, scale and reflector details of the sound-reflection set are each given their own row below. In short, a base board with a 0°–180° protractor in 1° graduations carries a central pivot pin, around which two hollow tubes on pointer brackets swing to face a 200 x 150 mm reflecting board.
| Specification | Value |
|---|---|
| SKU | SCL-PL-12060 |
| Base board | Graduated, with central pivot pin |
| Base material | Laminated wood or powder-coated metal |
| Protractor range | 0° to 180° |
| Graduation | 1° |
| Tubes | 2 hollow sound-guiding tubes |
| Tube material | Impact-resistant PVC or polished aluminium |
| Tube length | 300–450 mm |
| Tube mounting | 2 mounting brackets with pointers |
| Tube movement | Pivots smoothly, holds position by friction |
| Reflecting board | Wooden or plastic |
| Reflecting screen size | 200 x 150 mm |
| Sound source holder | Suits a stopwatch or small speaker |
| Literature | Instruction manual with sample experiments |
| Manufacturer | Science Lab Supplies, Saha, Ambala, Haryana |
| Country of origin | India |
Applications and Experiments for the Law of Reflection of Sound Apparatus
The apparatus turns an abstract rule into a measurement: with the incident tube set at a chosen angle, students can turn the second tube until the sound is loudest and read both angles from the scale. It fits the Class 9 science chapter on sound and introductory wave topics in college physics.
- Class 9 science: verifying that the angle of incidence equals the angle of reflection for sound, with the ear or a crystal Microphone connected to an oscilloscope.
- Comparing how wood, metal or foam placed in front of the board reflect or absorb sound.
- Linking reflection to echoes, sonar and room acoustics in STEM lessons, then comparing with light on the Light Ray Reflection Demonstrator.
A ticking stopwatch or a small buzzer in the source holder works well; keep loud sources away from the tube openings to protect hearing, and handle the tubes gently.
Standard Scope of Supply
The kit includes the graduated base board with its central pivot pin, two hollow sound-guiding tubes, two mounting brackets with pointers, the reflecting board, a sound source holder and an instruction manual with sample experiments. A stopwatch or buzzer for the source can be added to the same quotation.
Packing, MOQ and Lead Time
Single sets for a teacher's demonstration and larger lots for student groups can both be quoted, with packing, delivery time and price set out for the quantity requested. Other school physics lab equipment in India can be added to that quotation.
Science Lab Supplies, a registered exporter with an Importer-Exporter Code, can ship to buyers in Tanzania, Uganda, the UAE, Saudi Arabia, Oman and the Philippines. The business is registered under Udyam as a manufacturing enterprise (UDYAM-HR-01-0014546) and for GST (GSTIN 06ADEPJ0574F2ZU). Teachers planning a sound unit can request a price on the contact page, gather the items in the enquiry cart, or read the lab tender page before a formal bid.
Frequently Asked Questions
What sound source should be used?
A steady source such as a ticking mechanical stopwatch or a small electronic buzzer, placed in the source holder at the outer end of the incident tube.
Do the tubes lock at fixed angles?
No. They pivot smoothly on the central pin and hold position by friction, so any angle on the 0–180° scale can be set and read against the pointer on each bracket.
Is Science Lab Supplies the manufacturer or a trader?
Each base board, tube and reflector in this set is made in the company’s own Saha, Ambala facility in India, so buyers get their quotation from the manufacturer, not from a dealer.
Can it be used to study sound absorption?
Yes. Materials such as foam, cardboard or felt can be placed in front of the reflecting board to compare how strongly each one reflects or absorbs sound.
Related Sound Apparatus
These items build a fuller sound unit around the reflection experiment, from known frequencies, loudness and air-column resonance to the Doppler effect, a loudspeaker and a bell-in-vacuum set-up showing that sound needs a medium. All of them can share one quotation.
- Doppler Effect Kit lab — motorized carrier on a tracking rail moving a sound generator past a stationary detector.
- Tuning Fork Set — forks of 256, 320, 426.7 and 480 Hz for notes C, E, A and B, on a resonance box.
- Digital Sound Meter — 30–130 dB range with A and C weighting and fast or slow response.
- Resonance Apparatus Brass Pipe — brass pipe whose air column length is adjusted to find resonance with a tuning fork.
- Demonstration Loudspeaker — 10 W RMS, 8 Ω speaker of 125 mm diameter in a beech wood and acrylic frame.
- Demonstration Device of an Alarm from a Clock Under a Bell — glass cage with an electric bell, rubber plugs with two sockets and a vacuum pump.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 22 October 2026
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