Questions

Rafael Nadal defeated Daniil Medvedev in the men's singles title at the 2019 US Open. It was Nadal's 19th Grand Slam singles title, and fourth US Open title.

Absence of cell division is the process that never comes in interphase.

Hicky's Bengal Gazette was the first English-language newspaper and the first printed newspaper to be published in both the Indian sub-continent and in Asia. James Augustus Hicky, an Irishman started this in 1780.

Lady of the Lamp

Air Pressure can be defined as the pressure of air in the earth's atmosphere. It reaches a maximum of about 100,000 Pa near sea level and decreases as altitude increases.

The barometer is an instrument which is used for measuring Air pressure.

Physics instruments and their uses:

Barkometer  - - - Tanning liquors used in tanning leather

Bolometer  - - - Electromagnetic radiation

Spectrometer - - -  Properties of light.

We know that, the collection of programs which performs specific tasks in a computer is called as software. Software in a computer is of two types. They are :

1. Aplication Software

2. System Software

System software is a computer program that performs the basic functionaility of a computer i.e, running a systems hardware and applications like loading programs, saving data, displaying, etc...