MEDIUM
10th ICSE
IMPORTANT
Earn 100

State any two properties of infrared waves.

Important Questions on Spectrum and Colours

MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 13
What are microwaves? Write any two uses of these waves.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 14
Why is the infrared light used in long distance photography?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 15
When an invisible radiation is focused on a bulb of a thermometer, its temperature rises. Name the radiation.
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 16
What are the two types of radio waves used in communication?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 17
Why is the rock-salt prism or lens used to focus infrared light?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 18
Why UV bulbs have quartz envelope instead of a glass?
MEDIUM
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 1
Name any two sources of white light.
EASY
10th ICSE
IMPORTANT
S CHAND'S ICSE PHYSICS BOOK 2>Chapter 6 - Spectrum and Colours>QUESTIONS>Q 2
What is the colour of light obtained from a sodium vapour lamp?