Nikaah & Marriage Issues

Q: What is the minimum mahar in pounds?

Q: My elder sister is a divorcee and is 38 years old now. Last 10-12 years she was in love with a Hindu boy who is ready to convert to Islam for marriage. My Mom did not apporve of this relationship and passed away 5 months back. My sister is not ready to marry anybody else and says she will only marry that boy. My question is, if the boy is ready to convert to islam can this marriage be done and what should be done for him to become a muslim?

Q: If a son and father commits sodomy with each other, will this nullify the father's marrige with the son's mother?

Q: I want to ask about the hymen in Islam. Is it necessary for a girl to bleed on her wedding night?

Q: Is there any situation when zina (sex with a strange girl) is allowed?

Q: If a daughter sleeps with her mother and her body touches her mothers body and the daughter gets a slight strange feeling but no sexual thoughts, is hurmat musahara established?

Q: Is it allowed for a man to call his "mother in law" ammi or mother? 

Q: Do you get cursed by Allah for committing zina or watching pornography specifically?

Q: If a husband wife don't have sex for 5-6 months or more after their child was born, will it affect their nikaah in any way? They eat and sleep together and they both are happy with only one child. Somebody said that if they don't have sex for a long time it will affect their nikaah.

Q: What is the ruling for people who read sexual Islamic masail for the sake of nafs desire of reading such content?