Fizik
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1. Reflection of waves occurs when a wave strikes an obstacle, causing its direction of propagation to change. 2. There are two key laws of reflection: the angle of incidence equals the angle of reflection, and the incident, reflected, and normal waves all lie in the same plane perpendicular to the reflecting surface. 3. A simple experiment demonstrated the reflection of sound waves using cardboard tubes, with results showing that reflection causes a change in the direction of propagation but maintains the speed, wavelength, and frequency of the original wave.
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- 1. 1. 2 REFLECTION OF WAVES ALIA AMIRA NISRINA HUMAIRA BT.RASYIDI SITI NURNATASYA RAIHANA BINTI MOHD YUSRIE PHYSICS WAVE MRSM KOTA KINABALU
- 2. •Reflection of a wave occurs when a wave strikes an obstacle. The direction of propagation of the wave changed when it is reflected. •The incident wave is the wave before it strikes the obstacle, whereas the reflected wave is the wave which has undergone a change in direction of propagation after reflection. REFLECTION OF WAVES
- 3. LAWS OF REFLECTION 1.Angle of incidence = Angle of reflection 2.The incident wave, the reflected wave and the normal lie in the same plane which is perpendicular to the reflecting surface at the point of incidence.
- 4. A simple experiment of reflection of sound waves Equipment and materials: Stopwatch, 2 cardboard tube with length 50 cm, smooth wall, smooth/soft wood Figure 1 Procedure 1. Place a stop watch at the end of a hollow tube. 2. The tube is placed at an angle to a reflecting surface as shown in the above figure. 3. Keep a smooth wood vertical on the table top. 4. Place another hollow tube on the other side of the smooth wood and hold it close to ear. 5. Adjust the angle of the second tube until a loud ticking is heard. Make a conclusion of this activity. REFLECTION OF SOUND WAVE
- 5. REFLECTION OF LIGHT WAVE
- 6. Application of Reflection of Waves in Daily Life Defence (Periscope)
- 7. Communications ( Optic fibre )
- 8. SAFETY ( Side mirror)
- 9. SPM ALERT ! In the reflection of waves, the speed , wavelength and frequency of the waves do not change. However , the direction of propagation and velocity of the reflected waves change.