Malaysia SPM Form 5 Physics: Wave

1.1 Oscillation
1.2 Understanding Wave
1.3 Understanding Wave - Calculation
2.1 Wave Phenomena - Reflection and Refraction
2.2 Wave Phenomena - Difraction and Interference
3.1 Sound Wave

Electromagnetic Wave - Light Wave

The SPM Physics Workbook is developed under the One-School.net Free Books Project. The content of this book is strictly follow Malaysia SPM (Sijil Pelajaran Malaysia) syllabus. The aim of this project is to provide a complete electronic supplementary network for students to develop self-learning skills by breaking the spoon-feed rituals and to encourage them to compile educational information from the Internet.
1. Which of the following diagram shows the pattern of diffraction of a monochromatic light?

2. A pin hole is made in a piece of card, and an observer views a source of bright monochromatic light through the pin hole. Which of the following shows the pattern of diffraction observed by the observer?

3. In a single slit experiment, three light rays with colour yellow, green and blue are directed to a narrow slit separately. Which ray is least diffracted?
The yellow ray
The green ray
The blue ray

4. The figure above show a diffraction pattern of a monochromatic light produced by a narrow slit. The distance x will increase when

A wider slit is used.
The screen is brought nearer to the slit.
Replace the light with another monochromatic light which have longer wavelength.

5. Figure above shows the interference fringes produced from Young's double-slit experiment using a monochromatic green light source.
What will happens to the interference fringe patterns when the green light source is replaced by a purple light source?

The distance between consecutive fringes decreases.
The distance between consecutive fringes remains unchanged.
The spacing between consecutive fringes increases.

6. In Young’s double slit experiment, arrangement was set up to produce interference fringes on a screen using a monochromatic source of green light, the fringes were found to be too close together for observation. Which of the following ways would be possible to increase the separation of the fringes?

Decrease the distance between the screen and the slits.
Increase the distance between the source and the slits.
Increase the separation between the two slits.
Replace the light source with a monochromatic source of red light.

7. Which of the following sets of conditions will produces a widest separation between the bright fringes of the interference pattern in Young’s double slits experiment?

 Distance between slits Distance from slits to screen Wavelength of source large small short small large short small large long