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Physics 914 MCQs [All-Courses]

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Physics is a core science subject that deals with the study of matter, energy, motion, force, heat, light, electricity, magnetism, and modern physics concepts. It plays a vital role in competitive exams such as PPSC, FPSC, NTS, OTS, KPPSC, BPSC, AJKPSC, CSS, and PMS, where questions test conceptual understanding, numerical problem-solving, and application of laws and formulas. 

All Topics  914

Compton effect proves the________________?
A Photon theory of light
B Dual nature of light
C Wave nature of light
D Uncertain nature of light
Correct Answer: Photon theory of light
During fusion of hydrogen into helium________________?
A Energy is absorbed
B Energy is released
C Mass is increased due to energy absorption
D Mass is reduced due to the energy released
Correct Answer: Energy is released
The energy radiated is directly proportional to the fourth power of Kelvins temperature is________________?
A Karl-Weins law
B Rayleigh-Jeans law
C Stephens law
D Plancks
Correct Answer: Stephens law
In the nucleus of uranium, the number of neutrons will be _____________?
A 92
B 235
C 143
D Different for different isotopes
Correct Answer: Different for different isotopes
For confinement of electron in a box of radius 10-14m the electron, speed should be_____________?
A 107m/sec
B Should be greater than the speed of light.
C Be zero
D Not be wave-like
Correct Answer: Should be greater than the speed of light.
According to which one of following law the density of atom is uniform ?
A J.J.Thomson model
B Rutherfords model
C Bohrs model
D All of the above laws contradict the statement
Correct Answer: J.J.Thomson model
The uncertainty in momentum & position is due to its_____________?
A Property of matter and radiation
B Two-dimensional motion
C Emission of the certain wavelength
D Very high velocity
Correct Answer: Property of matter and radiation
Which one is not a type of dynamic equilibrium ?
A Rotational equilibrium
B Translational equilibrium
C Static equilibrium
D Both A and C are corret answer
Correct Answer: Static equilibrium
A three-dimensional image is obtained by________________?
A Electron microscope
B Scanning electron microscope
C Magnetic imaging
D None of the above
Correct Answer: Scanning electron microscope
A body will be in complete equilibrium when it is satisfying______________?
A 1st condition of equilibrium
B 2nd condition of equilibrium
C Both Ist and 2nd condition of equilibrium
D Impossible
Correct Answer: 2nd condition of equilibrium
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