Questions

Beats means the periodic increase and decrease in loudness heard when two notes of nearly the same frequency are sounded simultaneously.

Turbines are machines powered by rotating blades.

The red blood corpuscles  or erythrocytes usually carry antigens and there are two types of antigens. The A group persons have antigen A in their red corpuscles and the B group have antigen B in their red corpuscles. The AB group person have both antigen A and antigen B in their erythrocytes. The 'O' group persons have no antigens in their red corpuscles.

Light travels Faster than Sound.

Light :

1. Light doesn't require a medium to travel.

2. It travels in the vaccum with the speed of 1,86,000 miles per second.

Sound:

1. Sound rquire a medium.

2. It travels in the Air with the speed of 340 meters per second.

3. It travels Faster in Water than in Air.

4. It travels Faster in Steel than in Water. 

On December 4, 1971, the Indian Navy successfully executed Operation Trident, which was a devastating attack on Pakistan Naval Headquarters in Karachi. The operation, which marked the first use of anti-ship missiles in the region, did irreparable damage to the Karachi port during the 1971 Indo-Pak war. To commemorate this, December 4 is celebrated as the Indian Navy Day.

Every year to celebrate the achievements and role of the naval force to the country we clebrate Navy Day. The Indian Navy is the marine branch of the Indian Armed Forces and is led by the President of India as Commander-in-Chief.

Electrical Pressure is also called as Voltage. Voltage is measured in Volts.

Volt : A unit of electrical pressure or Voltage is called Volt.

One volt is the amount of pressure required to cause one ampere of current to flow against one ohm of resistance.

Voltage is also referred to as Electromotive Force or Electrical Potential or Electrical Pressure.