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If radium decoposes at a rate proportion...

If radium decoposes at a rate proportional to tha amount Q present, then the differential equation is

A

`(dQ)/(dt)=kQ,kgt0`

B

`(dQ)/(dt)=-kQ,kgt0`

C

`(dQ)/(dt)=Q`

D

`(dQ)/(dt)=-Q`

Text Solution

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The correct Answer is:
B
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NIKITA PUBLICATION-Differential Equation-MULTIPLE CHOICE QUESTION
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  12. The differential equation of all lines having x-intercept a and y-inte...

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  13. The differential equation of all straight lines passing through the po...

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  14. Find the differential equation of all straight lines, which are at a u...

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  16. Find the differential equation of the family of circles whose centres ...

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  17. Form the differential equation of the family of circles touching th...

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  18. The differential equation of all circles whose radius is 5 centre is a...

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