Assistant S and GAD 2019

A concave mirror, also known as a converging mirror, can focus sunlight to a single point. Concave mirrors have an inward-recessed reflecting surface that reflects light to a focal point. When parallel light rays hit a concave mirror, they are reflected and converge at the focal point.

Nusrat Ali Khan died in 1997.

Dublin is the capital of Ireland.

Gymnastics were added to the Olympics in 1896. Although introduced in the 1896 Olympic Games, gymnastics competitions were standardized years later in the 1928 Olympics. Women also began competing in the sport during the 1928 Olympics.

The currency of Nigeria is the Naira.