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Assertion: The ferromagnetic substances ...

Assertion: The ferromagnetic substances do not obey Curie's law.
Reason: At Curie point ferromagnetic substances start behaving as a paramagnetic substances start behaving as a paramagnetic substances.

A

Nickel

B

Sodium

C

Cesium

D

Potassium

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The correct Answer is:
C
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AAKASH SERIES-DUAL NATURE OF RADIATION AND MATTER-EXERCISE-I
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  6. Light of wavelengths lamda falls on a metal having work function (hc)...

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  7. When orange light falls on a photo sensitive surfaces the photo curren...

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  8. The cathode of a photoelectric cell is changed such that the work fun...

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  9. Stopping potential depends on planks constant (h), current (I), univer...

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  10. Assertion : Photoelectric current depends on the intensity of incident...

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  13. For the oxidation of ferric oxalate to CO(2), 18F of electricity is re...

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  14. Photo electric effect can be explained only by assuming that light A...

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  17. A 200 W sodium street lamp emits yellow light of wavelength 0.6 μm. As...

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  18. According to Einstein's photoelectric equation, the graph of kinetic e...

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