Physics MCQs here cover topics like Definition of Physics, Branches of Physics, Class 9, Class 10, Class 11, Class 12, SST test, and Everyday General Science MCQs. Physics MCQs for entry tests. Chemistry MCQS , Biology Mcqs
In bringing an electron towards the second electron, the electrostatic potential energy of the system ?
A. increases
B. becomes zero
C. Decreases
D. remains the sameHow many electrons per second constitute a current of one micro ampere ?
A. 10 –6 electrons
B. 106 electrons
C. 6.25 × 1012 electrons
D. one electronTwo parallel beams of positrons moving in the same direction will ______ ?
A. be deflected normal to the plane containing the two beams.
B. repel each other
C. not interact with each other
D. attract each otherAn emf of 5 volt is produced by a self inductance, when the current changes at a steady rate from 3 to 2 ampere in 1 millisecond. The value of self inductance is ____ ?
A. 5 mH
B. 5000 H
C. zero
D. 5 HCore of a transformer is laminated to reduce energy losses due to ______ ?
A. Resistance in winding
B. Eddy currents
C. Hysteresis
D. None of themWhich of the following is true?
A. Paschen series is a line spectrum in the infra red.
B. the spectral series formula can be derived from the Rutherford model of the hydrogen atom.
C. Lyman series is a continuous spectrum.
D. Balmer series is a line spectrum in the ultraviolet.Electric current in a solid metal conductor is caused by the movement of what?
A. Metal atoms
B. Metal ions
C. Electrons
D. ProtonsA force On particle is conservative if :______ ?
A. It’s obeys Newton’s third law
B. It work depends on the end points of every motion, not on the path between.
C. It’s works equals the change in the kinetic energy of the particle.
D. It’s obeys Newton’s second lawAtom is the smallest particall which is _____ ?
A. Divisible
B. Indivisible
C. Both
D. None of themAn atom is the smallest particle of an element, having the same chemical properties as the bulk element. The first accurate theory explaining the nature of matter was Dalton’s Atomic Theory: 1.
Potential energy means ?
A. Due to gravity
B. Due to position of object
C. Due to motion of object
D. None of them