Why does a star produce its own light and heat?
- Nuclear fission
- Nuclear fusion
- Chemical reaction
- None
×
Stars are huge celestial bodies made mostly of hydrogen and helium. Heat and light energy produced by the stars are due to the fusion reaction of hydrogen atoms.
Who is called the father of macroeconomics?
- Alfred Marshall
- John Maynard Keynes
- Adam Smith
- Leon Walras
×
Macroeconomics as a modern discipline began with the publication of John Maynard Keynes's General Theory of Employment, Interest, and Money where he offered a new theory of economics that evolved into Keynesian economics.
Constitution day of India is celebrated on
- 26th November 1949
- 26th November 1948
- 26th January 1950
- 26th November 1946
×
The Constitution of India was adopted by the Constituent Assembly on 26th November 1949 and came into force on 26th January, 1950.
What type of economy is followed in India?
- Traditional Economy: Economic system based on goods, services, and work, all of which follow certain established trends.
- Command Economy: A dominant centralized authority – usually the government – that controls a significant portion of the economic structure.
- Market Economy: Economic system based on the concept of free markets.
- Mixed Economy: Economic system that combine the characteristics of the market and command economic systems.
×
A mixed economic system is a system that combines aspects of both capitalism and socialism. This means that some industries are controlled by private businesses and individuals, while other industries are controlled by the government.
Who proposed the steady-state theory?
- Hermann Bondi
- Thomas Gold
- Sir James Jeans
- Fred Hoyle
×
The steady-state theory was first proposed by Sir James Jeans in the 1920s, but it was reformulated by Fred Hoyle, Thomas Gold, and Hermann Bondi in 1948.
