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प्रश्न
The figure shows the intensity-wavelength relations of X-rays coming from two different Coolidge tubes. The solid curve represents the relation for the tube A in which the potential difference between the target and the filament is VA and the atomic number of the target material is ZA. These quantities are VB and ZB for the other tube. Then,
विकल्प
VA > VB, ZA > ZB
VA > VB, ZA < ZB
VA < VB, ZA > ZB
VA > VB, ZA < ZB
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उत्तर
VA > VB, ZA < ZB
It is clear from the figure that the X-ray of tube A has less cutoff wavelength than the X-ray of tube B.
`therefore lambda_A < lambda_B`
Using Moseley's Law,
`Z_A < Z_B`
`lambda ∝ 1/V` , where V is the voltage applied in the X-ray tube.
`therefore V_A > V_B`
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संबंधित प्रश्न
(a) Give a list of at least five radiations, in order of their increasing frequencies, which make up the complete electromagnetic spectrum.
(b) Which of the radiation mentioned by you in part (a) has the highest penetrating power.
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(a)X-rays,
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(b) the intensity is higher
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(d) the photon energy is higher.
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Answer briefly.
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Write two uses of the following radiation.
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Identify the electromagnetic wave whose wavelength range is from about 10-12 m to about 10-8 m. Write one use of this.
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| Gamma ray | X - ray | UV rays | Visible rays | Infrared | A | Radio waves |
- Identify the radiation A.
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- Name one property common to both A and Radio waves.
What is the speed of radio waves in vacuum?
