Fill in the blank.
In a Ruby laser, the colour of laser light is due to ________ atom.

Oxygen

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Aluminium

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Xenon

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Chromium

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Solution

The correct option is C Chromium
Ruby crystal is composed of aluminum oxide, where some of the aluminum atoms have been replaced with chromium atoms. Chromium gives the ruby its vibrant red color.

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Fill in the blank.In a Ruby laser, the colour of laser light is due to ________ atom.

The correct option is C Chromium Ruby crystal is composed of aluminum oxide, where some of the aluminum atoms have been replaced with chromium atoms. Chromium gives the ruby its vibrant red color.

Fill in the blank.
In a Ruby laser, the colour of laser light is due to ________ atom.

The correct option is C Chromium
Ruby crystal is composed of aluminum oxide, where some of the aluminum atoms have been replaced with chromium atoms. Chromium gives the ruby its vibrant red color.