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Q. No.The orange colour of a carrot is due to the presence of the \(\beta\)-carotene molecule. This means that the \(\beta\)-carotene molecule absorbs light at wavelengths that are:
1. longer than \(550~\text{nm}\)
2. shorter than \(550~\text{nm}\)
3. longer than \(700~\text{nm}\)
4. shorter than \(700~\text{nm}\)
Subtopic: Electromagnetic Spectrum |
From NCERT
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The magnetic field in a plane electromagnetic wave is given by;
\(B=2\times10^{-7} \sin\left(0.5\times10^3x+10^{11}t\right)~\text{T}.\)
The electromagnetic wave is:
\(B=2\times10^{-7} \sin\left(0.5\times10^3x+10^{11}t\right)~\text{T}.\)
The electromagnetic wave is:
| 1. | visible light | 2. | infrared |
| 3. | microwave | 4. | radio wave |
Subtopic: Electromagnetic Spectrum |
From NCERT
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Q. No.
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