Answer laterQuestion : Which pioneer scientist used radio waves to transmit signals over distances of several kilometres in the 1890s?
Option 1: Michael Faraday
Option 2: Paul Langevin
Option 3: Guglielmo Marconi
Option 4: Pierre Weiss
Correct Answer: Guglielmo Marconi
Solution : The correct option is Guglielmo Marconi.
Guglielmo Marconi was a trailblazing scientist who, in the 1890s, used radio waves to send signals across several kilometres. Marconi, an Italian inventor and electrical engineer, is credited with being one of the key figures in the development of radio communication technology. In 1895, Marconi successfully transmitted a radio signal spanning 1.5 miles (2.4 kilometres) in Italy. He improved his wireless telegraphy system and achieved even longer-distance transmissions in the following years.
Question : Given below are four sentences, three of which, are jumbled. Pick the option that gives the correct order.
A. For example, though there is a close relation between invention and science and engineering, an inventor is not necessarily a scientist or an engineer. B. An engineer, on the other hand, uses existing technology and scientific understanding to design better objects or processes, but an inventor creates something that had never previously existed.
C. Inventors defy definition; as a result, they are frequently defined by what they are not.
D. A scientist is said to be a discoverer-that is, somebody who by acute observation and brilliant analysis is able to find and explain something that already exists in nature.
Option 1: CBAD
Option 2: CBDA
Option 3: CADB
Option 4: CDBA
Correct Answer: CADB
Solution : The correct choice is the third option.
The paragraph starts with sentence C, which introduces the idea that inventors are challenging to define and are often described by what they are not. It is followed by sentence A, which provides an example to illustrate the relationship between invention, science, and engineering, emphasising that an inventor is distinct from a scientist or engineer, followed by sentence D, which contrasts inventors with scientists, explaining the role of a scientist as a discoverer who explains things that already exist in nature. The paragraph concludes with sentence B, which contrasts inventors with engineers, highlighting the difference in their roles and the creative aspect of an inventor.
Question : The scientist who first sent electromagnetic waves to distant places is
Option 1: James Clerk Maxwell
Option 2: Heinrich Hertz
Option 3: Thomas Alva Edison
Option 4: John Logie Baird
Correct Answer: Heinrich Hertz
Solution : The correct option is Heinrich Hertz.
Heinrich Hertz was the physicist who first transmitted electromagnetic waves across a substantial distance. In the latter half of the 19th century, he carried out experiments that demonstrated the existence of electromagnetic waves and their capacity to move through the air.
Question : In which year was the Doppler effect discovered by Austrian scientist Christian Doppler, which describes the change in frequency of any kind of sound or light wave produced by a moving source concerning an observer?
Option 1: 1846
Option 2: 1844
Option 3: 1842
Option 4: 1840
Correct Answer: 1842
Solution : The correct answer is 1842.
Christian Doppler, an Austrian physicist, initially described the Doppler Effect in 1842. It is visible when the pitch of a vehicle's horn changes as it approaches and recedes from the observer. Christian Doppler first tested the effect of motion on waves by hiring a group of musicians to play on an open railway car as it moved along the track.
What is the qualifications of applied scientists in India?
Being an applied scientist in India is a very wise profession. To do a job that a scientist genuinely covers, you need to have proper dedication, immense interest in your work and a good grip in research. For being a scientist you need to posses the basic degrees like :
10+2 with a good %
Pursuing courses like B.Sc / B.E / B.Tech , for that you can sit for different entrance exams
Followed by M.Sc/ M.Tech
And PhD completed successfully, if you crack exams like GATE , you can avail a good fellowship for your higher studies.
Which is better Mtech in aerospace engineering or MSc physics for an ISRO scientist? Actually i am so interested to go for MSc physics.Now iam a 12 th standard student. Is there any more consideration for an aerospace engineer to become an ISRO scientist?
Hi Candidate,
If you are interested in MSc Physics, then you must go ahead with your interest. Complete your undergraduation, then go for MSc physics. Later, ISRO Centralised Recruitment Board (ICRB) which conducts an entrance exam for the recruitment of vacancies in technical posts/researchers/scientists etc. Check out the pattern, syllabus and clear the exam. Then you will be called for interview, if you qualify that too, then you can join ISRO.
Hope I answered your query, thankyou!
what subjects one can study in applied physics
Dear aspirant,
Hope you are doing well. As per your query the subjects or aspects that one has to study under applied physics is-
Mathematics, Mangnetism, Thermodynamics, Quantum Theory, Physical principles, Mechanics, Electromagnetic Theory, Statistical Analysis and many more. Please click on the link below for more information and updates. Hope you find this helpful. Thank you.
