Aconverging equiconvex lens of glass of refractive index 1.5 is laid on a horizontal plane mirror. a pin coincides with its inverted image when it is 1.0m above the lens. when some liquid is placed between the lens and the mirror, the pin has to be raised by 0.55m
for coacidence to occur again. what is the refractive index of the liquid?

  the unit of the measure =

explanation:

  the property that is quantified by the energy needed per of material to raise the temperature by one.

  si unit of energy = joule (j)

  si unit of temperature = kelvin (k)

  si unit of mass of material = kilogram (kg)

the property that is quantified by the energy needed per of material to raise the temperature by one is called specific heat.

the unit of specific heat is

not too sure thinking all accelerations are pointed down