Henri Becquerel was a physicist, Nobel laureate, and the discoverer of radioactivity, for work in this field he, along with Marie SkÅodowska-Curie and Pierre Curie, received the 1903 Nobel Prize in Physics.
The SI unit for radioactivity, the becquerel (Bq), is named after him.
Section-1: General Science - Physics Question - 7
A solar eclipse is a type of eclipse that occurs when:
the Moon passes between the Sun and Earth
the Earth is between the Moon and the Sun
the Sun is between the Moon and the Earth
the moon does not lie on the line joining the sun and the earth
Sir Chandrasekhara Venkata Raman, FRS was an Indian physicist, born in the former Madras Province, whose ground breaking work in the field of light scattering earned him the 1930 Nobel Prize for Physics.
Section-1: General Science - Physics Question - 9
In radiocarbon dating the age of an object containing organic material is determined by using the properties of:
Radiocarbon dating (also referred to as carbon dating or carbon-14 dating) is a method of determining the age of an object containing organic material by using the properties of carbon-14, a radioactive isotope of carbon.
Section-1: General Science - Physics Question - 10
Speeds greater than five times the speed of sound (Mach 5) are often referred to as:
Supersonic speed is a rate of travel of an object that exceeds the speed of sound (Mach 1).
Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic.
Flight during which only some parts of the air surrounding an object, such as the ends of rotor blades, reach supersonic speeds are called transonic. This occurs typically somewhere between Mach 0.8 and Mach 1.23