The lasing material in Ruby laser is
$Al_{2}O_{3}$
$Ni^{2+}$
$V^{3+}$
$Cr^{3+}$
Additional Questions
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Aqueous solution of which of the following is a good conductor of electricity? |
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When the polarising angle for a dense flint glass is 60° 30, then it’s refractive |
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The institution(s) which is/are set up to promote funding of voluntary organisations is/are |
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The laws of electrolysis are given by |
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Electromagnetic waves were proposed by |
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Consider the following statements: |
Answer |
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Match List I with List II correctly and select your answer using the codes given |
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A galaxy is a huge mass of |
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One tesla is |
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Relative frequency is defined as |
Answer |