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WorksheetsRecap from last time
Total questions: 6
Worksheet time: 3mins
Who is this?
Elon musk
Giorgio Armani
Kim Soo-Hyun
Albert Einstein
What is LASER?
Light Amplitude Super Emission of Radiation
Light Applied by Spontaneous Emotion of Radiation
Light Amplification by Spontaneous Emission of Radiation
Light Amplification by Stimulated Emission of Radiation
The wavelength of visible light is ranged between...?
380 - 750 mm
380 - 750 nm
0 - 200 nm
more than 10,600 nm
What is wavelength?
The height of the wave from top to bottom
The basic unit of the radiant energy
The amount of intensity in the wave
The horizontal distance between any two corresponding points on the wave
What is not the properties of LASER?
Coherent
Directional
Loudness
Monochromatic
Which of following is NOT correct?
Photon is basic unit of this radiant energy
The basic unit of energy is Hertz (Hz)
Wavelength is inversely proportional to frequency
Photons travel at a speed of light
