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Assertion (A): If S be the area of a cir...

Assertion (A): If S be the area of a circle having radius x and A the area of an euilateral triangle having side `pi`x at any isntant, then `(dA)/(dt) gt (ds)/(dt)`
Reason (R ) : `A gt S`

A

Both A and R are true and R is the correct explanation of A

B

Both A and R are true R is not the correct explanation of A

C

A is true but R is false

D

A is false but R is true

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The correct Answer is:
A
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AAKASH SERIES-RATE MEASUREMENT-PRACTICE SHEET (EXERCISE - 1) (LEVEL - 1) (STRAIGHT OBJECTIVE TYPE QUESTION)
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  5. At the point (2,3) on the curve y = x^(3) - 2x + 1, the gradient of th...

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  6. A point is moving along the cubical parabola 12y = x^(3). The rate of...

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  7. Moving along the x - axis there are two points with x = 10 + 6t, x =3 ...

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  8. The pressure p and the voluem v of a gas are connected by the relation...

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  10. If the semivertical angle of a cone is 45^(@) then the rate of chang...

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  12. A ballon is in the shape of a cone surmounted by a semi sphere. The ra...

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  13. The spherical ballon is being inflated so that its volume increases un...

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  14. If the radius of a sphere ia equal to the height and radius of the cyl...

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  15. A rectangular vessel is of 2 mt long. 0.5 mt breadth and I mt deep. If...

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  16. The diameter and altitude of a right circular cylinder are found at a ...

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  17. Sand is being poured on the ground from the orifice of an elevated pip...

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  18. Gas is leaking out of a spherical ballon at the rate of 1800 cubic cm ...

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