Question

Young's double slit experiment using monochromatic light of wavelength lambda the intensity of light at a point on the screen where path difference is lambda is k units find out the intensity of light at a point where the path difference is

Answer 1

Answer:

1. exothermic process in which heat is given out .
2. endothermic process in which heat is absorbed .

Explanation:

1.when NaOH (solid )dissolves in water there is evolution of heat leading to rise in temperature

2.when KNO dissolves in water there is absorbed of heat during the reaction and the temperature of the solution fall