The range of wavelength of the visible light is
- A$10\ \mathring A$ to $100\ \mathring A$
- B$3,900\ \mathring A$ to $7,800\ \mathring A$
- C$8,000\ \mathring A$ to $10,000\ \mathring A$
- D$10,000\ \mathring A$ to $15,000\ \mathring A$
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Which of the following waves are associated with communication?
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View SolutionMatch the List-$I$ (Phenomenon associated with electromagnetic radiation) with List-$II$ (Part of electromagnetic spectrum) and select the correct code from the choices given below:
List-$I$ List-$II$ $I$. Doublet of sodium $A$. Visible radiation $II$. Wavelength corresponding to temperature associated with the isotropic radiation filling all space $B$. Microwave $III$. Wavelength emitted by atomic hydrogen in interstellar space $C$. Short radio wave $IV$. Wavelength of radiation arising from two close energy levels in hydrogen $D$. $X$-rays
| List-$I$ | List-$II$ |
| $I$. Doublet of sodium | $A$. Visible radiation |
| $II$. Wavelength corresponding to temperature associated with the isotropic radiation filling all space | $B$. Microwave |
| $III$. Wavelength emitted by atomic hydrogen in interstellar space | $C$. Short radio wave |
| $IV$. Wavelength of radiation arising from two close energy levels in hydrogen | $D$. $X$-rays |
Match the List-$I$ with List-$II$. Choose the correct answer from the options given below:
List-$I$ List-$II$ $A.$ Radio-wave $I.$ Produced by Magnetron valve $B.$ Micro-wave $II.$ Due to change in the vibrational modes of atoms $C.$ Infrared-wave $III.$ Due to inner shell electrons moving from higher energy level to lower energy level $D.$ $X$-ray $IV.$ Due to rapid acceleration of electrons
| List-$I$ | List-$II$ |
|---|---|
| $A.$ Radio-wave | $I.$ Produced by Magnetron valve |
| $B.$ Micro-wave | $II.$ Due to change in the vibrational modes of atoms |
| $C.$ Infrared-wave | $III.$ Due to inner shell electrons moving from higher energy level to lower energy level |
| $D.$ $X$-ray | $IV.$ Due to rapid acceleration of electrons |
Match List-$I$ with List-$II$.
List-$I$ List-$II$ $(a)$ Source of microwave frequency $(i)$ Radioactive decay of nucleus $(b)$ Source of infrared frequency $(ii)$ Magnetron $(c)$ Source of Gamma Rays $(iii)$ Inner shell electrons $(d)$ Source of $X$-rays $(iv)$ Vibration of atoms and molecules $(v)$ $LASER$ $(vi)$ $RC$ circuit
Choose the correct answer from the options given below:
| List-$I$ | List-$II$ |
|---|---|
| $(a)$ Source of microwave frequency | $(i)$ Radioactive decay of nucleus |
| $(b)$ Source of infrared frequency | $(ii)$ Magnetron |
| $(c)$ Source of Gamma Rays | $(iii)$ Inner shell electrons |
| $(d)$ Source of $X$-rays | $(iv)$ Vibration of atoms and molecules |
| $(v)$ $LASER$ | |
| $(vi)$ $RC$ circuit |
Choose the correct answer from the options given below:
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