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Q. No.If the frequency of an EM wave is \(10\) MHz, then its wavelength is:
1. \(30\) m
2. \(300\) m
3. \(3\) m
4. none of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology| 1. | \( b>a>c \) | 2. | \( a>b>c \) |
| 3. | \( c>b>a \) | 4. | \( a>c>b\) |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe biological importance of the ozone layer is:
| 1. | it stops ultraviolet rays. |
| 2. | ozone layer reduces the greenhouse effect. |
| 3. | ozone layer reflects radio waves. |
| 4. | ozone layer controls \(\mathrm{O}_2 / \mathrm{H}_2\) ratio in the atmosphere. |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology
Which of the following has the minimum wavelength?
1. \(X\text-\)rays
2. Ultraviolet rays
3. \(\gamma\text-\)rays
4. Cosmic rays
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat is the cause of “Greenhouse effect”?
1. Infra-red rays
2. Ultraviolet rays
3. \(X\text-\)rays
4. Radio waves
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe velocity of electromagnetic waves is parallel to:
1.
2.
3.
4.
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyIf \(\lambda_{v}, \lambda_{x},\) and \(\lambda_{m}\) represent the wavelengths of visible light, \(x\text-\)rays and microwaves respectively, then:
1. \( \lambda_{m}>\lambda_{x}>\lambda_{v} \)
2. \( \lambda_{v}>\lambda_{m}>\lambda_{x } \)
3. \( \lambda_{v}>\lambda_{x}>\lambda_{m }\)
4. \(\lambda_{m}>\lambda_{v}>\lambda_{x}\)
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologySelect Chapter Topics:
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Q. No.
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