Govt Exams
Brazil is the world's largest coffee exporter and producer, accounting for about one-third of global coffee production.
The Atacama Desert is located in Chile and is one of the driest places on Earth.
India held the G20 presidency in 2023, focusing on development and sustainability of the global economy.
The Strait of Gibraltar separates Spain (Europe) from Morocco (Africa) and connects the Atlantic Ocean to the Mediterranean Sea.
The 2024 Nobel Prize in Physics was awarded to Demis Hassabis, John J. Hopfield, and Geoffrey E. Hinton for their contributions to machine learning.
The Amazon Rainforest covers approximately 60% of Brazil's territory and is the largest rainforest in the world.
The Dead Sea, the lowest point on Earth's surface, is located between Israel and Jordan.
Vatican City is an independent city-state located entirely within Rome, Italy, and is the smallest country in the world by both area and population.
- Vatican City: 0.44 square kilometers (approximately 110 acres)
- Monaco: 2.02 square kilometers
- San Marino: 61.2 square kilometers
- Liechtenstein: 160.5 square kilometers
Therefore, the answer is C) Vatican City - the smallest country in the world at 0.44 sq km.
Speed of light in vacuum is a fundamental physical constant that remains the same regardless of the observer's reference frame.
The speed of light in vacuum (denoted as 'c') is the fastest speed at which energy or information can travel through space. This is a universal constant established by Einstein's theory of relativity.
The experimentally determined speed of light in vacuum is approximately 299,792,458 m/s, which is commonly rounded to:
- Option (A) 2×10⁸ m/s — too low, doesn't match experimental data
- Option (B) 3×10⁸ m/s — matches the accepted standard value
- Option (C) 4×10⁸ m/s — too high
- Option (D) 1×10⁸ m/s — far too low
This value is used in all physics formulas involving light, such as Einstein's E = mc² equation and electromagnetic wave calculations.
Therefore, the speed of light in vacuum is 3×10⁸ m/s
In '1984', the protagonist Winston Smith lives in Oceania, a totalitarian superstate that includes the British Isles.
The novel depicts a dystopian world divided into three superpowers: Oceania, Eurasia, and Eastasia, each engaged in perpetual warfare.