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Statemet-1: the electrical conductivity ...

Statemet-1: the electrical conductivity of earth's atmosphere increases with altitude.
Statement -2: The high energy particles (i.e., `gamma`- rays and cosmic rays) coming from outer space while entering our earth's atmosphere cause ionization of the atoms of the gases present in the atmosphere and their energy decreases as they approach to earth.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
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ERRORLESS -WAVE OPTICS-SET
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  2. Following figures shows sources S1 and S2 that emits light of waveleng...

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  3. In a Young's double slit experimental arrangement shown here, if a mic...

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  4. In the set up shown in figure, the two slits S1 and S2 are not equidis...

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  5. The intensity ratio of two coherent sources of light is p. They are i...

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  6. Three waves of equal frequency having amplitudes 10mum, 4mum, 7mum arr...

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  7. Four different independent waves are represented by (i) y(1) = a(1) ...

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  8. A beam of light consisting of two wavelength 650nm and 520nm is used t...

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  9. Two identical radiators have a separation of d=lambda//4 where lambda ...

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  10. In Young’s double slit experiment, the 8 th maximum with wavelength la...

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  11. Light of wavelength 500nm is used to form interference pattern in Youn...

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  12. Two coherent sources of equal intensity produce maximum intensity of 1...

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  13. The path difference between two interfering waves of equal intensities...

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  14. In a Young's double slit experiment, I0 is the intensity at the centra...

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  15. In a Fresnel’s diffraction arrangement, the screen is at a distance of...

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  16. If n represents the order of a half period zone, the area of this zone...

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  17. A screen is placed 50 cm from a single slit, which is illuminated with...

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  18. In Young's double slit experiment, the fringes are displaced index 1.5...

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  19. Two waves of equal amplitude and frequency interfere each other. The r...

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  20. In Young's double-slit experiment , we get 60 fringes in the field of ...

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  21. A parallel- plate capacitor with plate area A and separation between t...

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