Answer:
The correct option is;
The index of refraction of the second medium is lower
Explanation:
The index of refraction of a material indicates the magnitude of the optical density of a material. The index of refraction or the refractive index, n, are indices (ratio) of the speed of light through an optically dense medium relative to the speed of light through a vacuum.
The definition of the refractive index is the number of times light travelling through a medium would be slower than light travelling through vacuum
Therefore, the index of refraction of a second medium that is less optically dense than a first medium from which light originates and travels through it would be lower than the index of refraction of the first medium
 
        
                    
             
        
        
        
Chlorine pls mark as brianliest
        
             
        
        
        
Answer:
on an average, <em>2</em><em>0</em><em>H</em><em>z</em><em> </em><em>to</em><em> </em><em>2</em><em>0</em><em>k</em><em>H</em><em>z</em>
 
        
             
        
        
        
Answer:
Number of gallons =2 gallon
Explanation:
given data:
 rate of gasoline ineurope = 5 euro per liter
total money to buy gasoline =  40 euro
total gasoline an american can buy in europe 
 = 8 litres of gasoline
As given in the question 1 ltr is 1 quarts therefore  
Total no. of quarts is 8 quarts
As from question 4 quarts is equal to one gallon, hence
Number of gallons