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Spectroscopy

7. 

Light emerging from a nicol prism has

A. vibrations in all directions B. no vibration at all C. Vibration in tow mutually perpendicular directions D. vibrations in only one direction

Answer : C. Vibration in tow mutually perpendicular directions

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8. 

Raman effect is due to

A. Scattering of light B. Total internal reflection C. Dispersion effect D. Interference of light

Answer : A. Scattering of light

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9. 

In a standing wave the distance between a node and adjacent antinode is

A. 3 lamda/ 2 B. lamda / 2 C. lamda / 4 D. 3 lamda/4

Answer : C. lamda / 4

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10. 

X-rays cannot pass through

A. Glass B. bone C. tree D. None of these

Answer : B. bone

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11. 

The phenomenon which cannot be explained by wave theory is

A. reflection B. refraction C. photo electric emission D. polarisation

Answer : C. photo electric emission

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12. 

What is the principle of a thermopile?

A. Peltier effect B. Seebeck effect C. Zeeman effect D. Crompton effect

Answer : B. Seebeck effect

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