Invisible nature of visible light!

What makes everything visible?

• Light

• Invisible ink

• Prism

• UV light

Why can't we see light itself?

• Photons are invisible

• It's a sound wave

• It's a solid object

• It's too bright

How do we see objects in complete darkness?

• By using a spectrometer

• By using a flashlight or a lamp

• By using a UV light

• By using a telescope

What determines the color of light?

• Its brightness

• Its wavelength

• Its area

• Its temperature

What can we use to detect wavelengths of light beyond the visible spectrum?

• Spectrometer

• Prism

• Flashlight

• Mirror

How is a rainbow created?

• When light passes through water droplets in the air and is refracted

• When light is absorbed by objects

• When light is reflected off of a surface

• When light is emitted by a source

What device do scientists use to analyze light and determine its properties?

• Spectrometer

• Prism

• UV light

• Flashlight

How do we indirectly see the light from the sun or a lightbulb?

• By using a Gyroscope

• By looking at the light directly

• By analyzing its properties

• By observing the objects it illuminates

Can we see ultraviolet and infrared light with our naked eyes?

• Yes, always

• Yes, sometimes

• No, never

• It depends on the situation

Which type of light is used to check the authenticity of currency notes?

• Visible light

• Infrared light

• UV light

• X rays