What do you mean by dispersion of light?

Important Questions on Spectrum and Colours

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 8

What causes the dispersion of light?

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 9

Why do we see the phenomenon of dispersion in a glass prism but not in a glass slab?

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 10

When a white light ray moves from air to glass at some angle, violet colour deviates most from its path. Why?

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 11

What causes an impure spectrum? Explain with the help of a neat ray diagram.

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 12

State necessary conditions to obtain pure spectrum.

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 13

Name the instrument used to obtain pure spectrum. Describe the working of its different parts.

MEDIUM

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 14

A beam consists of blue and red colour rays. When it falls on one face prism red ray suffers total reflection from the other face of the prism. Will blue ray also suffer total reflection from this face of the prism? Explain. 

HARD

10th ICSE

IMPORTANT

S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 15

What causes the rainbow in the sky?