Answer: Igneous it forms because of magma but magma is under the earths surface so its Igneous
Explanation:
Population density<span> (in agriculture: standing stock and standing crop) is a measurement of </span>population<span> per unit area or unit volume; it is a quantity of type number </span>density<span>. It is frequently applied to living organisms, and most of the time to humans.</span>
To solve this problem we will use the heat transfer equations, to determine the amount of heat added to the body. Subsequently, through the energy ratio given by Plank, we will calculate the energy of each of the photons. The relationship between total energy and unit energy will allow us to determine the number of photons
The mass of water in the soup is 477g
The change in temperate is

Use the following equation to calculate the heat required to raise the temperature:

Here,
m = Mass
c = Specific Heat


The wavelength of the ration used for heating is 
The number of photons required is the rate between the total energy and the energy of each proton, then

This energy of the photon is given by the Planck's equation which say:

Here,
h = Plank's Constant
c = Velocity of light
Wavelength
Replacing,


Now replacing we have,


Therefore the number of photons required for heating is 
Answer : The work function of this metal is, 
Explanation : Given,
Wavelength of light = 
Formula used :

where,
E = work function of metal
h = Planck's constant = 
= threshold frequency
= wavelength of light
c = speed of light = 
Now put all the given values in this formula, we get the value of work function of this metal.



Therefore, the work function of this metal is, 