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Line spectra are due to...

Line spectra are due to

A

Hot solids

B

Atoms in gaseous state

C

Molecules in gaseous state

D

Liquid at low temperature

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The correct Answer is:
b
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ERRORLESS -RAY OPTICS-SET
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  9. Which of the following ray diagram show physically possible refraction...

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  10. Following figure shows the multiple reflections of a light ray along a...

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  11. When the rectangular metal tank is filled to the top with an unknown l...

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  13. A ray of light strikes a plane mirror M at an angle of 45^(@) as shown...

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  14. A slab of glass, of thickness 6 cm and refractive index 1.5, is placed...

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  15. A point source of light S is placed at the bottom of a vessel containi...

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  19. When a ray is refracted from one medium to another, the wavelength cha...

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