physicscatalyst.com logo



Test Series-16





Instructions

  • Your test contains 20 multiple choice questions with only one answer
  • This is 30 min test.Please make sure you complete it in stipulated time
  • You can Finish this test any time using 'Submit' button.
  • Once finished you get a chance to review all question with correct answers and their solutions.


1.Which of these is false for electric charge?
  • Electric charge is additive
  • e (1.6X10-19 C) is the elementary charge
  • charge can not be destroyed or created
  • 1 Coulumb of charge contain 6.25X1017 electron
  • Coulomb law of electric force between the charges follows Newton's third law of motion
  • The net force on any charge equals the vector sum of the forces exerted on it by all the charges

Link Type comphrehension( Q2-Q5)
A parallel plate capacitor has capacitance C. It is connected to a battery of EMF E until fully charged, and then disconnected. The plates are then pulled apart an extra distance d, during which the measured potential difference between them changed by a factor of i.
2) Did the potential difference increase or decrease by a factor of i?
  • decrease
  • increase

3. What is true about electric field between the plates
  • electric field remains unchanged
  • electric field decrease by the factor i
  • electric field increase by the factor i
  • None of these

4..What is true of energy stored in electric field?
  • Energy remains unchanged
  • Energy decrease by the factor i
  • Energy increase by the factor i
  • None of these


5.What happens the to the capacitance ?
  • Capacitance increases
  • Capacitance decreases
  • Capacitance remains unchanged

6. Electromotive force represents
  • Work
  • Momentum
  • Power
  • Energy per unit change
  • Force

7. Which of the following is False?
  • Kirchoff's first law of electric circuit is law of conservation charge
  • Kirchiff's second law of electric circuit is law of conservation of energy
  • Kirchoff's second law is based on law of conservation of momentum
  • None of these

8. Both electric forces and magnetic forces can deflect electron. Which of the following statement is false?
  • Kinetic energy of the electron does not change in magnetic field
  • Kinetic energy of the electron do change in electric field
  • Kinetic energy neither changes in electric field nor in magnetic field
  • None of these

9.A particle is moving vertically downward.it passes through a magnetic field directed from south to north in a horizontal plane.which of the following is false?
  • If the particle is positively charged ,it will be deflected towards east
  • If the particle is negatively charged ,it will be deflected towards east
  • If the particle has no charge ,it will not be deflected
  • None of these

10.A charged particle at rest experiences no forces. At the location of the particle
  • electric field may or may not be zero, Magnetic Field must be zero
  • electric field may or may not be zero, Magnetic Field may or may not be zero
  • electric field must be zero,Magnetic Field must be zero
  • electric field must be zero, Magnetic Field may or may not be zero

11. A Proton moving with constant velocity passes through a region without any change in its velocity. If E and B denote electric and magnetic field,this region cannot have
  • E > 0, B >0
  • E=0,B=0
  • E > 0,B=0
  • E=0,B > 0

12. A bar magnet falls verticall down through a coil placed in horizontal plane? What will be the acceleration of bar magnet?
  • g
  • greater than g
  • less than g
  • zero
13. which of these are true?
  • A conducting rod XY moves parallel to the x-axis in a unform magnetic field poiting in +z direction.The end X is towards -y direction.The end X will be positiveely charged
  • A square coil of metal wire is stationary in a non-uniform magnetic field,An Emf is induced in the coil
  • The self inductance of the straight conductor is very large
  • Lenz's law is a consequence of the law of conservation of charge
14. An inductor stores energy in its
  • Magnetic field
  • Electric field
  • electric and magnetic field both
  • None of these
15. which of these is not true for radioactive decay.
  • The nucleus of the atom emits the radio active radition
  • The penetrating power of Gamma rays is highest among the radioative radiation
  • alpha and beta particles are deflected by electric and magnetic field but gamma rays are not
  • None of these
16. When a ray of light enters a glass slab from air
  • Wavelenght decreases
  • Frequency increase
  • Neither wavelenght nor frequency changes
  • None of these
17. Which of the these is true in Bohr model of hydrogen atom
  • The total energy of electron in the mth orbit is inversely proportional to m
  • radiation are emmited when electron jumps from lower orbit to higher orbit
  • The radius of the mth orbit is inversely propotional to m
  • Angular momentum of the electron in mth orbit is an integral multiple of h/2π
18. In an AC circuit, which of these is true?
  • The applied instantanous voltage equal to the algebric sum of the instantanous voltages across the different element
  • The applied instantanous voltage equal to the vector sum of the instantanous voltages across the different element
  • Power dissipation happens in inductor and resistance in an AC circuit
  • None of these
19. If the distance between the earth and sun were half its present value,the number of days in the years would have been
  • 129
  • 730
  • 181
  • 64.5
20. Which of these is false for movement of alpha and beta particles in electric and magnetic field
  • Both the article move in circular path in magnetic field
  • curvature of path of beta particle is more than the curvature of alpha particle in magnetic field
  • Deflection of alpha particle is opposite to that beta particle in electric field
  • None of these


Note to our visitors :-

Thanks for visiting our website. From feedback of our visitors we came to know that sometimes you are not able to see the answers given under "Answers" tab below questions. This might happen sometimes as we use javascript there. So you can view answers where they are available by reloding the page and letting it reload properly by waiting few more seconds before clicking the button.
We really do hope that this resolve the issue. If you still hare facing problems then feel free to contact us using feedback button or contact us directly by sending is an email at [email protected]
We are aware that our users want answers to all the questions in the website. Since ours is more or less a one man army we are working towards providing answers to questions available at our website.