The refractive index of diamond is approximately 2.42. Diamond has a very high refractive index, which means it bends light at a significant angle when it enters the diamond, contributing to its sparkling brilliance.

The CAG is n authority, established by the constitution under constitution of India. Part V- Chapter V/sub-part 7B/ Article 147, who audits all the receipts and expenditure of the government of India. Under the act of 1919, the Secretary of India was given the charge to appoint CAG in India.

World Suicide Prevention Day is observed on September 10th each year. This day is dedicated to raising awareness about suicide prevention and promoting worldwide efforts to prevent suicides. It provides an opportunity for individuals, organizations, and governments to come together to work towards reducing the stigma associated with suicide and to promote mental health awareness. Various events and activities are organized globally to support suicide prevention efforts on World Suicide Prevention Day.

1. Under Article 280 of the Constitution of India, the President is required to constitute a Finance Commission at the end of every five years or at such earlier time as the President considers necessary.

2. The Finance Commission is a 'constitutional body' constituted by the President of India.

3. Who gives his advice to the President on the states' share in the taxes of the Centre?

4. K.C. Niyogi was the first Chairman of the Finance Commission.