IELTS

every institute have its own fee structure ,but it varies from 5000 to 15000.

You class 12th score is little low, but IELTS score is good. You can appear for SAT exam and this will increase your admission chances.
Below mentioned is the list of best universities:
1. University of Melbourne.
2. RMIT University.
3. Monash University.
4. University of Sydney, etc.

Your IELTS score is good enough to get admissions in Masters course.
There are some universities of Canada which accept 15 years of education.
You can go for pre-Masters in University of Manitoba.
http://umanitoba.ca/faculties/graduate_studies/admissions/programs/physics.html

You can apply for Australia under ELICOS.

To file PR from India this percentage is good but 8 band in IELTS and work experience of atheist 4 years is required. The only way for getting a PR is by marrying a girl of that country if you want it before studying.

You can go to Australia after applying under ELICOS because to study in Australia after 12th you need 5.5 bands with not less than 5 in each module. Since, you have 4.5 in one module you have 2 options i.e. either apply under ELICOS or else give the IELTS paper again. In ELICOS, besides studying you

Hello Mahesh,
You have a very good IELTS score and decent aggregate. But, most of the Canadian universities are acad-centric. They are mainly concerned about the aggregate and backlogs. However, few decent universities will still accept your score. Here is the list of universities, which you can aim

As per Australia standard, you better appear again in IELTS exam. You need to score 6.5 band.

Most schools require qualifications comparable to a Canadian Bachelors degree, which means a minimum of 16 years of formal education. In the Indian context, it implies qualifying in a professional four year degree like engineering or other such courses.
You need to score 70% in Bachelors degree.
TOEFL