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Suppose that a mothball loses volume by ...

Suppose that a mothball loses volume by evaporation at a rate proportional to its instantaneous area. If the diameter of the ball decreases from 2cm to 1cm in 3 months, how long will it take until the ball has practically gone?

A

4 months

B

3 months

C

2 months

D

1 months

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A, B, C
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AAKASH INSTITUTE-DIFFERENTIAL EQUATIONS-Assignment Section - C (Objective Type Questions) (Multiple than one options are correct)
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  7. The tangent at any point P of a curve C meets the x-axis at Q whose ab...

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  10. Suppose that a mothball loses volume by evaporation at a rate propo...

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  11. Let x(1-x)\ dy/dx = x-y

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  12. Let a curve passes through (3, 2) and satisfied the differential equat...

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  13. A curve satisfies the differential equation (dy)/(dx)=(x+1-xy^2)/(x^2y...

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  14. Tangent is drawn at any point P of a curve which passes through (1, 1)...

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  15. y=c1 x+c2 sin(2x+c3) (C1, C2, C3 are arbitrary constants)

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  16. Which of the following statements is/are true ?

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  17. A curve passes through (1,0) and satisfies the differential equation (...

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