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Spectroscopy


1. 

Consider the following statements:
Assertion (A ): X-rays do not affect photo graphic plate
Reason(R ): Wavelengths of x-rays are in betweenn 1 A to 100 A

Answer : C. A is false, but R is true

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2. 

when there is depletion of ozone in the stratosphere the wavelength of radiation striking the earth's surface will be

Answer : B. 10-7 m

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3. 

which one of the following layers of the atmosphere is responsible for the reflection of radio waves?

Answer : D. Ionosphere

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4. 

Which of the following waves/ rays are produced by nuclear changes in the atom?

Answer : D. gamma rays

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5. 

The splitting of different colours in a prism is called

Answer : D. Dispersion

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6. 

Four electro magnetic waves of different wave lengths are given. X-rays,Microwaves,Ultra Violent,Infrared. Their correct arrangement in the descending order of wave length is

Answer : B. Microwaves,Infrared,Ultraviolent and X-rays

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