Dispersion of Light Concepts

The video tutorial explains the phenomenon of light dispersion, which is the splitting of white light into its constituent colors. It describes how rainbows are formed due to dispersion when sunlight passes through water droplets, acting like prisms. An activity using a prism demonstrates this effect, showing the spectrum of colors. The tutorial also highlights everyday examples of dispersion, such as in water fountains and soap bubbles. The concept was first discovered by Sir Isaac Newton.

What natural phenomenon is caused by the dispersion of light?

• Rainbow

• Thunderstorm

• Earthquake

• Tornado

What materials are needed for the activity to demonstrate dispersion of light?

• A mirror, a white sheet, and a flashlight

• A prism, a white sheet, and a cardboard with a hole

• A lens, a black sheet, and a cardboard with a hole

• A prism, a black sheet, and a flashlight

What is the order of colors observed in the band formed by dispersion?

• Red, Orange, Yellow, Green, Blue, Indigo, Violet

• Violet, Indigo, Blue, Green, Yellow, Orange, Red

• Green, Yellow, Orange, Red, Violet, Indigo, Blue

• Blue, Green, Yellow, Orange, Red, Violet, Indigo

What is the acronym used to remember the sequence of colors in the spectrum?

• VIBGYOR

• RGBYIVO

• VIBGROY

• ROYGBIV

Who first discovered the phenomenon of dispersion of light?

• Nikola Tesla

• Albert Einstein

• Galileo Galilei

• Sir Isaac Newton

What role do water droplets play in the formation of a rainbow?

• They scatter the sunlight in all directions

• They act like small prisms and refract the sunlight

• They reflect the sunlight without changing its color

• They absorb the sunlight

In which direction is a rainbow always formed?

• Opposite to the Sun

• Towards the South

• Towards the North

• Towards the Sun

Which of the following is NOT an example of dispersion of light in daily life?

• Soap bubbles

• Mirrors

• CDs

• Water fountains

What is the phenomenon of splitting white light into its constituent colors called?

• Refraction

• Diffraction

• Reflection

• Dispersion

What is the band of constituent colors called?

• Rainbow

• Wave

• Prism

• Spectrum