Tag: light and the formation of shadows

Quizzes (11) Questions (28)

Questions Related to light and the formation of shadows

Multiple choice newton's colour disc light and the formation of shadows physics

If a newton's colour disc composed of seven colours is rotated at high speed, it appears as 

  1. Seven coloured disc rotating

  2. Few colours merge and only three dominant colours are visible

  3. Colours mix and it appears white

  4. Colours mix giving a sparkling effect
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

When newton's colour disc is rotated at high speed it appears white.

Multiple choice newton's colour disc light and the formation of shadows physics

When the Newton's disc is rotated what happens

  1. The colours fade to white

  2. The colours fade to black

  3. The colours fade to red

  4. The colours fade to blue
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.
When the disc is rotated, the colours fade to white. In this way, Sir Isaac Newton demonstrated that white light is a combination of the seven different colours found in a rainbow.

Hence, the correct answer is OPTION A.

Multiple choice newton's colour disc light and the formation of shadows physics

What is the sequence of colors obtained on splitting of white light?

  1. VBIGYOR

  2. VIBGOYR

  3. VIBGYOR

  4. VIGBYOR
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The sequence of colours obtained on splitting of white light is VIBGYOR- Violet, indigo, blue, green, yellow, orange and red.

Multiple choice newton's colour disc light and the formation of shadows physics

Sunlight is made up of ____ colors.

  1. 7

  2. 6

  3. 5

  4. 4
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Isaac Newton was the first person to split sunlight into seven colors using a glass prism. When he tried to split the band of colors further using a second prism placed in the inverted position as compared to that of the first, he observed that the emergent ray was white colored. This gave him an idea that sunlight is made up of 7 colors and any other light that gives a spectrum similar to that of sunlight is often referred to as white light.

Multiple choice newton's colour disc light and the formation of shadows physics

Which of the following most appropriately defines a spectrum?

  1. The band of seven colours is known as spectrum

  2. The process of splitting of white light into seven colours is known as spectrum

  3. The different wavelength of light are termed as spectrum

  4. All of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Visible range consists of seven different colours i.e, VIBGYOR. The band of these seven colours is known as spectrum.

Multiple choice newton's colour disc light and the formation of shadows physics

Newton's colour disc was invented by whom?

  1. Albert Einstein

  2. Sir Isaac Newton

  3. Sir Isaac Newton and Faraday

  4. Sir Isaac Newton and John Kennedy
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.

Hence, the correct answer is OPTION B. 

Multiple choice newton's colour disc light and the formation of shadows physics

The light of one single colour is called:

  1. monochromatic

  2. multichromatic

  3. dichromatic

  4. polychromatic
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Monochrome means single colour. The light of one single colour is monochromatic. White light have seven colours. So it is polychromatic.

Multiple choice newton's colour disc light and the formation of shadows physics

What does Newton's colour disc possess?

  1. 7 segments in rainbow colours

  2. 5 segments in rainbow colours

  3. 4 segments in rainbow colours

  4. 9 segments in rainbow colours
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Newton's colour disc, as the name suggests, was invented by Sir Issac Newton and is a disc with seven segments in rainbow colours.

Hence, the correct answer is OPTION A. 

Multiple choice newton's colour disc light and the formation of shadows physics

Due to which phenomena the combination of red, green and blue forms the same white colour

  1. Due to persistence of vision

  2. Due to reflection

  3. Due to refraction

  4. Due to deviation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Due to persistence of vision the combination of red, green and blue forms the same white color.