Explanation

• The Bolshevik Revolution took place in 1917.
• It overthrowing the Tsarist regime.
  • It led to the establishment of the Soviet Union and Communist rule under Lenin.
  
  
  Additional Points:
  • February 1917: The Tsar abdicated during the February Revolution.
  • October 1917: Bolsheviks seized power in Petrograd (St. Petersburg).

Last verified on 15-01-2026

Explanation

Greenwich is an area in south-east London, located in England

It lies on the south bank of the River Thames in the historic county of Kent.

It is famous for the Prime Meridian (0° longitude).

It is used as the reference for Greenwich Mean Time (GMT).

The Greenwich meridian, also known as the prime meridian, passes through the following countries:

• England
• France
• Spain
• Algeria
• Mali
• Burkina Faso
• Togo
• Ghana 
• Antarctica

Explanation

Explanation

Slide transitions can be applied to the current slide, previous slide, or new slide.

Transitions can be set to occur when entering or exiting any of these slides.

Explanation

On a hill overlooking the Spanish city of Granada stands the Alhambra, a palace built by princes belonging to the Muslim Nasrid dynasty (1238–1492) in the 14th century.

Explanation

Area = Length × Width

30 = 5 × Width

Width = 30 / 5

Width = 6

Explanation

Explanation

Galvanometer works on electromagnetic principles, where electric current produces a magnetic field.

The interaction between magnetic field and coil causes the needle to deflect, allowing current measurement.

A galvanometer measures small currents.

To measure larger currents, a low resistance (called a shunt) is connected in parallel, converting it into an ammeter.

Explanation

When a meteoroid enters Earth’s atmosphere, it burns and becomes a meteor (shooting star).

If it survives the burn and lands on Earth, it is called a meteorite.

Explanation

Transistors were invented in 1947 at Bell Labs by Bardeen, Brattain, and Shockley.

This invention revolutionized electronics and led to modern computers.