PPSC Physics Topic 8 MCQ Test With Answer

PPSC Physics Topic 8 Scientists, Their Inventions and discoveries

Sr. #	Questions	Answers Choice
1	The first demonstration of wave nature of light was provided in 1801 by the experiment of	HHuygen Thomas young Fresnel Maxwell
2	The diffraction of light was discovered by	Newton Young Francesco Grimaldi Hertz
3	The wave nature of light was proposed by	Thomas Young Fresnel Maxwell Huygen
4	The corpusclular nature of light was given by	Huygen Maxwell Newton Thomas Young
5	Polaroid's were invented in	1787 1887 1897 1929
6	Interference effects of light were verified by	Thomas Young Newton Bragg Huygen
7	Every point on any wave front can be considered as a new source of waves This statement is known as.	Huygen's wave theory Michelson's wave theory Remain's effect Rayligh's wave theory
8	Light travels perpendicular to electric and magnetic fields and requires no material medium, was proposed by.	Einstein Max planck Maxwell Bragg
9	The study of atomic structure of crystals by x rays was initiated by.	Mosely Young Huygen Bragg
10	Which scientist announced for the first time that the universe is expanding.	Einstein Newton Edward Hubble Karl Marx
11	Who introduced the concept that an atom possesses quantized energy levels.	Fermi Newton Bohr Einstein
12	Which of the following pair is correct.	Rutherford - x-rays Roentgen - Electron Chadwick - Neutron J.J. Thomson -Photon
13	Who first studied the visible region of hydrogen spectrum.	Lyman Pfund Balmer Brackett
14	What invention is generally referred to as the first capacitor.	Mason Jar Kleist Jar Layden Jar Ohm Jar
15	Who developed the world's first vacuum pump in 1650.	Otto vori Guricke Lord Kelvin Saadi Carnot James maxwell
16	Who originated the idea of heat death of the universe is 1852	Lord Kelvin James thomson John Thomson Saadi Carnot
17	Who invented the first closed tube thermometer in 1713	Gabried Fahrenheit Galileo anders Celsius Lord Kelvin
18	Who explained the Fraunhofer lines in the spectrum of solar radiations.	Wein Stefan Fraunhofer Kirchoff
19	Who provided theoretical explanation of a blackbody spectrum.	Einstein Planck Wien stefan
20	Who developed hypothetical heat engine that has the maximum possible efficiency in 1824	Saadi carnot August Otto rudolf Diesel Kari Benz