Question

MRVHSS PADNE Class VIII. Mark :10 PHYSICS 1. Find out the relation and fill in blanks. (2) a) Mass : kg: temperature. b) kg: basic unit: kg/m2 2. Kg and gram are the unit of mass 1kg=. gram. 3. Define density? Write the unit of density? (2) 4. Why kerosene floats on water? (1) 5. If petrol diesel etc.. catches fire one should never try to extinguish it using water why? (2) 6. Fill in the blanks (2) Basic Unit Name Fundamental quantity Symbol Length Luminous intensity​

Answer 1

Answer:

tr I have done a good evening evening evening are very short and

Answer 2

Answer:

The density, of a substance is its mass per unit volume. The symbol most often used for density is ρ, although the Latin letter D can also be used. Mathematically, density is defined as mass divided by volume: {\displaystyle \rho ={\frac {m}{V}}} where ρ is the density, m is the mass, and V is the volume

Density is the mass of an object divided by its volume. Density often has units of grams per cubic centimeter (g/cm3). Remember, grams is a mass and cubic centimeters is a volume (the same volume as 1 milliliter)

The candela, symbol cd, is the SI unit of luminous intensity in a given direction