Answer
Verified
97.8k+ views
Hint: In this question there are four different types of inventions named. Just think about the corresponding topic behind each invention. Some quantities like some laws or units are named after the great scientists who pioneered in that topic.
Complete solution:
Here, we’ll explain one by one according to the inventions.
First battery: Batteries are one of the most used electricity sources in our daily life. Before the invention of electric generators batteries served as the main source of electricity. In the year 1800 Volta invented the first true battery, later which was known as voltaic pile. He used copper and zinc as electrodes and brine as the electrolyte.
Radioactivity: Radioactivity is a spontaneous process through which an unstable atomic nucleus loses energy by emitting alpha and beta particles with gamma rays. In 1896, radioactivity was first discovered by French scientist Henry Becquerel while he was working with phosphorescent substances. There he noticed that the uranium salts were creating spots on the photographic plates despite being wrapped by black paper. That was actually happening due to radioactive decay of uranium.
Dynamo: Dynamo is the very first electrical generator which creates direct current (DC) using mechanical energy. It was first discovered in the year 1831-1832 by Michael Faraday. It works on the principle that an emf is generated within a conductor when it encircles some varying magnetic flux. Later this operating principle was known as Faraday’s law.
Ohm’s law: Ohm’s law is a very fundamental law of electrodynamics. It states that the current passing between two points of a conductor is directly proportional to the voltage difference across the two points. As the name suggests, this law was first published in 1827 by George Simon Ohm.
Final answer,
Note: Sometimes a student might get confused while matching the inventions with their inventors. But the inventor's name is always associated with something related to the invention. For this case notice that the first battery was called voltaic pile and the unit of potential difference is volt, both named after Volta. Then the SI unit of radioactivity is becquerel(Bq) named after its inventor. Dynamo principle is known as Faraday’s law and the name Ohm’s law is self-explanatory. So, for this type of question always try to find this type clue to get the correct answer.
Complete solution:
Here, we’ll explain one by one according to the inventions.
First battery: Batteries are one of the most used electricity sources in our daily life. Before the invention of electric generators batteries served as the main source of electricity. In the year 1800 Volta invented the first true battery, later which was known as voltaic pile. He used copper and zinc as electrodes and brine as the electrolyte.
Radioactivity: Radioactivity is a spontaneous process through which an unstable atomic nucleus loses energy by emitting alpha and beta particles with gamma rays. In 1896, radioactivity was first discovered by French scientist Henry Becquerel while he was working with phosphorescent substances. There he noticed that the uranium salts were creating spots on the photographic plates despite being wrapped by black paper. That was actually happening due to radioactive decay of uranium.
Dynamo: Dynamo is the very first electrical generator which creates direct current (DC) using mechanical energy. It was first discovered in the year 1831-1832 by Michael Faraday. It works on the principle that an emf is generated within a conductor when it encircles some varying magnetic flux. Later this operating principle was known as Faraday’s law.
Ohm’s law: Ohm’s law is a very fundamental law of electrodynamics. It states that the current passing between two points of a conductor is directly proportional to the voltage difference across the two points. As the name suggests, this law was first published in 1827 by George Simon Ohm.
Final answer,
Sl. No. | Scientists | Inventions |
1 | Volta | First battery |
2 | Henry Becquerel | Radioactivity |
3 | Michael Faraday | Dynamo |
4 | George Simon Ohm | Ohm’s law |
Note: Sometimes a student might get confused while matching the inventions with their inventors. But the inventor's name is always associated with something related to the invention. For this case notice that the first battery was called voltaic pile and the unit of potential difference is volt, both named after Volta. Then the SI unit of radioactivity is becquerel(Bq) named after its inventor. Dynamo principle is known as Faraday’s law and the name Ohm’s law is self-explanatory. So, for this type of question always try to find this type clue to get the correct answer.
Recently Updated Pages
Write a composition in approximately 450 500 words class 10 english JEE_Main
Arrange the sentences P Q R between S1 and S5 such class 10 english JEE_Main
Write an article on the need and importance of sports class 10 english JEE_Main
Name the scale on which the destructive energy of an class 11 physics JEE_Main
Choose the exact meaning of the given idiomphrase The class 9 english JEE_Main
Choose the one which best expresses the meaning of class 9 english JEE_Main
Other Pages
Calculate CFSE of the following complex FeCN64 A 04Delta class 11 chemistry JEE_Main
Electric field due to uniformly charged sphere class 12 physics JEE_Main
Formula for number of images formed by two plane mirrors class 12 physics JEE_Main
The focal length of a thin biconvex lens is 20cm When class 12 physics JEE_Main
If two bulbs of 25W and 100W rated at 200V are connected class 12 physics JEE_Main
A ball of mass 05 Kg moving with a velocity of 2ms class 11 physics JEE_Main