| 1. In the given circuit, potential difference between points P and Q is... |
a) 20 V |
| 2. The ratio of a magnetic field at the centre of the ring |
d) 27:1 |
| 3. The dimensional formula of current sensitivity.... |
c) [A]-1 |
| 4. The horizontal component of the earth's magnetic field.... |
d) Zero |
| 5. The magnetic field produced by a very long straight conducting wire.... |
option A |
| 6. A paramagnetic substance... |
a) to move from a region of weak magnetic field to a strong magnetic field |
| 7. As shown in figure two identical conducting rings.... |
a) anticlockwise, anticlockwise |
| 8. A pair of adjacent coins... |
c) 60 Wb |
| 9. In an AC generator... |
b) maximum at time Pi/2w |
| 10. What is the approximate... |
d) 22.8% |
| 11. In which of the following AC Circuit... |
d) LCR series circuit |
| 12. The output voltage of a step-down transformer... |
b) 1/sqrt 2 A |
| 13. _____ is used in medicine to destroy cancer cells |
a) gamma rays |
| 14. The speed of light in a medium... |
c) 1.5 |
| 15. What is the power of combination of convex lens and concave lens... |
d) zero |
| 16. At what angle of incidence... |
b) 53 degree |
| 17. If the tube-length of a compound.... |
a) increases |
| 18. Two waves of same intensity.... |
c) cos^2 (o/2) |
| 19. For light diverging from a point source.. |
b) the wavefront is spherical |
| 20. In young's double slit experiment... |
a) 600nm |
| 21. The minimum value of electric field required to pulled.... |
a) 10^6 |
| 22. Monochromatic light of frequency... |
d) 1X10^6 photons per second |
| 23. what is the de-Broglie... |
a) 2X10^-35m |
| 24. According to Bohr's model... |
d) 4.2X10^-34 kgm^2s^-1 |
| 25. 13.6 eVenergy is required... |
b) 2.2X10^6 ms |
| 26. The ground state energy... |
c) -27.2 eV, +13.6 eV |
| 27. Calculate the height of the potential barrier.. |
b) 5.76 X 10^-14 J |
| 28. Choose the correct option to complete the net effect.... |
a) He,26.7 MeV |
| 29. ________ pair is called isotones |
d) Hg , Au |
| 30. What is the current flowing through the given circuit? |
b) 10mA |
| 31. When a reverse bias is applied.. |
b) raises the potential barrier |
| 32. A filter circuit used in a rectifier, the value of load resistance... |
a) 3ms |
| 33. The electric field due to point charge 2q... |
a) 2E |
| 34. 15 charges each of value q are.... |
option d |
| 35. In the absence of gravity... |
c) qEn/2m |
| 36. As shown in figure charges +q, +q.... |
b) 2kg/l |
| 37. Charge 1.6x10^-7C.... |
a) R |
| 38. The potential difference between two plates of parallel... |
d) electric forces acting on both the electrons are same |
| 39. The drift velocity of an electron... |
b) V4 |
| 40. As shown in the figure, balanced condition of wheatstone bridge is... |
c) 1/2 |
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