17 March : Daily Current Affairs Quiz

Answer: Option D - Houthi Insurgency – Yemen

Explanation:

• Sanaa, Saada, Al-Bayda, and Radaa are key locations in Yemen, frequently in the news due to the ongoing Houthi insurgency.
• The conflict involves the Houthis, an Iran-backed rebel group, fighting against Yemen’s internationally recognized government.
• Sanaa is the Houthi-controlled capital, while Saada is a stronghold.
• Al-Bayda and Radaa witness clashes between various factions, including government forces and extremists.
• The conflict has caused severe humanitarian and geopolitical tensions.

Answer: Option B - It decreases with an increase in the wavelength of light in most transparent materials.

Explanation:

• In most transparent materials, the refractive index decreases as the wavelength of light increases.
• This phenomenon, known as normal dispersion, occurs because shorter wavelengths interact more strongly with the medium, leading to greater slowing of light.
• This is why blue light refracts more than red light in a prism.
• However, in some cases, anomalous dispersion can occur near absorption frequencies.

Answer: Option C - It results from anisotropic crystal structures causing light to split into two rays with different speeds and directions.

Explanation:

• Birefringence occurs in anisotropic materials where the crystal structure varies along different directions, leading to two distinct refractive indices.
• When light enters such a material, it splits into an ordinary and an extraordinary ray, each traveling at different speeds.
• Natural birefringent materials include calcite, quartz, and mica.
• This property is widely used in optical devices like polarizers and waveplates.

Answer: Option C - Investment in physical assets like factories and infrastructure in a foreign country, leading to managerial control.

Explanation:

• Foreign Direct Investment (FDI) involves long-term investment by a foreign entity in a country’s businesses, typically through physical assets like factories, infrastructure, or acquisitions, leading to managerial control.
• Unlike Foreign Portfolio Investment (FPI), which involves passive holdings in financial markets, FDI brings technology, expertise, and economic growth.

Countries attract FDI through policy incentives, ease of doing business, and economic stability to boost industrial development and job creation

Answer: Option B - China > United States > Japan > India

Explanation:

• ​China is the world leader in solar energy production, with the highest installed capacity.
• United States ranks second, significantly expanding its solar infrastructure.
• Japan follows in third place, with advanced solar technology and widespread adoption.
• India is the fifth-largest producer globally but ranks fourth among these options.