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 is used in school science and in college physics labs. Science Lab Supplies is the manufacturer, producing the apparatus at Plot 448, HSIIDC Industrial Area, Saha, Ambala, India, and it goes directly to schools, colleges, tender contractors and distributors.
Specifications
A base board printed with a protractor scale from 0° to 180° in 1° graduations carries a central pivot pin. Two hollow sound-guiding tubes on mounting brackets with pointers swing around it and hold their angle by friction, facing a 200 x 150 mm reflecting board.
| Parameter | Value |
|---|---|
| SKU | SCL-PL-12060 |
| Protractor scale | 0° to 180°, 1° graduations |
| Tubes | 2 hollow sound-guiding tubes, 300–450 mm long, on brackets with pointers |
| Reflecting screen | 200 x 150 mm |
| Sound source holder | Suits a stopwatch or small speaker |
| 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 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.
- 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.
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. The stopwatch or buzzer used as the source is provided by the school.
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.
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). Enquiries go through the contact page or the enquiry cart, and tender details are on the lab tender page.
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 and hold position by friction, so any angle on the 0–180° scale can be set and read.
Is Science Lab Supplies the manufacturer or a trader?
The apparatus is manufactured by Science Lab Supplies itself at its Saha, Ambala facility in India; buyers get their quotation from the maker, 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 reflects sound.
Related Sound Apparatus
These Physics Lab items build a fuller sound unit around the reflection experiment, from frequency and loudness to the Doppler effect, and can all share one quotation.
- Doppler Effect Kit lab — change of pitch with a moving source.
- Tuning Fork Set — known frequencies for sound lessons.
- Digital Sound Meter — measures sound level.
- Demonstration Device of an Alarm from a Clock Under a Bell — shows that sound needs a medium.
Browse the full Physics Lab range or all physics lab equipment.
Last updated: 25 September 2026
