Fill in the blanks to complete the idea of the sentences. Write your answers on a separate sheet of paper. 1. is the bending of light as it passes from one medium to another of different optical densities.
2. The of a material is a quantity that compares the speed of light in that material to its speed in a vacuum.
3. When light moves from one medium to another of different , the speed changes, bringing changes in the direction of the refracted ray with respect to the normal line.
4. The component colors of white light arranged from the ___ bent to the bent are as follows: Red, Orange, Yellow, Green, Blue, Indigo and Violet.

HELLPP MEE
I'LL GIVE YOU A BRAINLIEST IF THE ANSWER IS CORRECT

Explanation:

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b) nuclear ive learned that in a pedtrodic table

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.