Physics-
General
Easy
Question
A cylinder of mass 5 kg. and radius 30 cm, and free to rotate about its axis, receives an angular impulse of 3 kgM2 S-1 initially followed by a similar impulse after every 4sec. what is the angular speed of the cylinder 30 sec after initial emulse ? The cylinder is at rest initially
The correct answer is: 
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A body of mass m is tied to one end of spring and whirled round in a horizontal plane with a constant angular velocity. The elongation in the spring is one centimeter. If the angular velocity is doubted, the elongation in the spring is 5 cm. The original length of spring is..
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In figure,
and
then the area of the shaded region in square units is

In figure,
and
then the area of the shaded region in square units is

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In the figure,
and ar
The value of
?

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and ar
The value of
?

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The median AD of the triangle ABC is bisected at E and BE meets AC at F. If AF:AC =1/k then the value k

The median AD of the triangle ABC is bisected at E and BE meets AC at F. If AF:AC =1/k then the value k

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In the figure,
If AB = 6 cm, BE = 4cm, CD = 10cm, then EF + EC = ... Cm.

In the figure,
If AB = 6 cm, BE = 4cm, CD = 10cm, then EF + EC = ... Cm.

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In the figure,
, AB = 9cm, AD = 7cm, CD = 8cm and CE = 10cm Then DE = ?

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In the figure,
If AB = 3cm, PB = 2cm and PR = 6cm then QR = ? cm.

In the figure,
If AB = 3cm, PB = 2cm and PR = 6cm then QR = ? cm.

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In the figure,
and
If OA = 3x – 1, OB = 2x + 1, OC = 5x – 3, OD = 6x – 5 then AC =....units.

Hence AC=12
In the figure,
and
If OA = 3x – 1, OB = 2x + 1, OC = 5x – 3, OD = 6x – 5 then AC =....units.

Maths-General
Hence AC=12