Can some help me to convert the below xml data into php array. Thanks in advance.
[code]
<![CDATA[Which of the following is not the measure of a physical quantity?]]>
<![CDATA[kilogram]]>
<![CDATA[impulse]]>
<![CDATA[energy]]>
<![CDATA[density]]>
<ans_desc><![CDATA[kilogram is the name of the fundamental unit of mass]]></ans_desc>
<![CDATA[Which of the following sets can enter into the list of fundamental quantities
in any system of units?]]>
<![CDATA[length, mass and velocity]]>
<![CDATA[length, time and velocity]]>
<![CDATA[mass, time and velocity]]>
<![CDATA[length, time and mass]]>
<ans_desc><![CDATA[velocity cannot enter in this set because it itself involves length and time.]]></ans_desc>
<![CDATA[If the unit of force and length are doubled, the unit of energy will be]]>
<![CDATA[Πtimes]]>
<![CDATA[œ times]]>
<![CDATA[2 times]]>
<![CDATA[4 times]]>
<ans_desc><![CDATA[
Energy = Force ![]()
distance = Force ![]()
length.
When force and length are doubled, the unit of energy will becomes four times
that of its initial value.
]]>
<![CDATA[Given that displacement of a particle is given by
![]()
where t denotes the time. The unit of K is]]>
<![CDATA[hertz]]>
<![CDATA[metre]]>
<![CDATA[radian]]>
<![CDATA[second]]>
<![CDATA[
Here K is dimensionless. Thus
![]()
]]>
<![CDATA[Dimensions of velocity gradient are same as that of ]]>
<![CDATA[time period]]>
<![CDATA[frequency]]>
<![CDATA[angular acceleration]]>
<![CDATA[acceleration]]>
<![CDATA[
[velocity gradient ]
= [ velocity] / [ distance]
![]()
]]>
<![CDATA[Which of the following physical quantities is/are dimensionless?]]>
<![CDATA[length]]>
<![CDATA[time]]>
<![CDATA[mass]]>
<![CDATA[all of these]]>
<![CDATA[all these quantities are dimensionless.]]>
<![CDATA[Erg
![]()
sec is the unit of ]]>
<![CDATA[angle]]>
<![CDATA[momentum]]>
<![CDATA[gravitational constant]]>
<![CDATA[Planck's constant]]>
<![CDATA[The unit of Planck’s constant is
![]()
]]>
<![CDATA[Which of the following have same dimension?]]>
<![CDATA[pressure and density]]>
<![CDATA[gravitational potential and energy]]>
<![CDATA[impulse and momentum]]>
<![CDATA[stress and strain]]>
<![CDATA[
Impulse = force ![]()
time
![]()
Momentum = mass ![]()
velocity
![]()
![]()
]]>
<![CDATA[Which of the following pairs of physical quantities will have same dimensional
formula]]>
<![CDATA[work and couple]]>
<![CDATA[force and power]]>
<![CDATA[latent heat and specific heat]]>
<![CDATA[work and power]]>
<![CDATA[
work = force ![]()
displacement
![]()
![]()
![]()
![]()
]]>
<![CDATA[Planck’s constant has same dimension as]]>
<![CDATA[energy]]>
<![CDATA[force]]>
<![CDATA[linear momentum]]>
<![CDATA[angular momentum]]>
<![CDATA[
![]()
![]()
Angular momentum ![]()
![]()
]]>
<![CDATA[The dimension of Planck’s constant is]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
We know that E=hv
![]()
![]()
]]>
<![CDATA[Dimension of torque is ]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
Torque = force ![]()
distance
![]()
![]()
]]>
<![CDATA[The dimensions of angular velocity is]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
c]]>
<![CDATA[
![]()
![]()
![]()
]]>
<![CDATA[If
![]()
were chosen as fundamental units of force, velocity and time
respectively, the dimensions of mass would be represented as ]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
We know that Force = mass ![]()
acceleration
![]()
![]()
]]>
<![CDATA[If energy E, velocity V and time T are taken as the fundamental units, what
is the dimensional formula for energy per unit area?]]>
<![CDATA[E V T]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
]]>
<![CDATA[
![]()
Here a= 1
Now ![]()
Or ![]()
![]()
This gives ![]()
So, c= -2
![]()
]]>
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