laser

What is laser?

• A type of light
• A type of X-ray
• A type of wave
• A type of particle

K2. What is the principle behind laser?

• Reflection
• Refraction
• Coherence
• Scattering

K3. What is the origin of the term "laser"?

• Light Amplification by Stimulated Emission of Radiation
• Light Amplification by Synthetic Emission of Radiation
• Light Amplification by Synthetic Electromagnetic Radiation
• Light Amplification by Stimulated Electromagnetic Radiation

K4. What type of material is used to produce laser light?

• Glass
• Metal
• Gas
• Solid-state

K5. What is the most common type of laser?

• Gas laser
• Solid-state laser
• Fiber laser
• Semiconductor laser

What is the most common use of laser in medicine?

• Treatment of cancer
• Diagnosis of diseases
• Eye surgery
• Dental surgery

A2. What is the most common use of laser in industry?

• Cutting and welding
• Printing
• Measuring
• Surveying

A3. Can laser be used for communication?

• Yes, always
• No, never
• Sometimes
• It depends on the type of laser

A4. What is the most common use of laser in entertainment?

• Projecting images
• Producing music
• Dancing
• Singing