ONGC GT Physics Exam Question Paper

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Here is the list of few questions of ONGC GT Physics Exam Question Paper which you are looking for .

1. Refractive index of the material is
a.Electronic property b. same all materials c. nuclear property d. none of above
2. When light is incident on dielectric material, regarding reflected and transmitted ray?
a. Reflected rays are plane polarized b. reflected and transmitted rays are orthogonally polarized c. transmitted rays are polarized d. both are not polarized
3. The plane which is parallel to Z axis and perpendicular to xy plane? (110) (001) (101)
4. The eigen value of Hermitian operators are real or real and positive?
5. The transpose of matrix is same as inverse of matrix if a. identity matrix b. real matrix
6. Find the eigen values of matrix (two questions given using formula sum of eigen values = sum of principal diagonal elements)
7. Result of young double slit experiment β= λ D/d
8. The eigen function of hydrogen atom Ψ= A e ikx, the expected distance of electron from nucleus a. a b. a/2 c. 3/2 a
9. According to bloch theorem, the wave function is u(k) e ikx
10. According to Hisenberg’s uncertainty principle, two conjugate variables cannot be measured simultaneously
11. Condition for skidding …….
12. The laser transition is not possible in a. 2 level laser b. 3 level c. 4 level d. 5 level
13. The condition for optical pumping a. one of excited states should be metastable state
14. In He-Ne laser, laser transition is in a. He b. Ne c. both He and Ne
15. In He-Ne laser, He is used for pumping the atoms to excited state, transition at Ne only
16. The electric force is due to electric dipole is proportional to a. 1/r2 b. 1/r3 c. 1/r
17. Electric dipole transition will occurs if a. both states even b. both odd c. opposite parity.
18. The principle used in GPS a. Zeeman effect b. saccess effect
19. The photonic crystal used in a. lasers b.
20. Protons 100ev are accelerated by cyclotron, if protons are replaced by α particles and deuterons, the energy is… a. 100ev and 50ev b. 200ev and 50ev c. 50ev and 50ev
21. When mass less particle moves with velocity c’, then a. E=P=0 b. E=pc c. E=p/c
22. E×H gives a. impedance b. velocity c. energy per unit area
23. When photon of 700nm incident on a material has work function 2.3ev, what will be kinetic energy of photo electrons? A. 1ev b. 0ev c.
24. The electrostatic field can be represented by a. Δ×E=0 Δ2E=0 Δ.E=0
25. Which is not pseudo vector of following a. angular momentum b. electrostatic fld c. torque d. magnetic field
26. The electron to be exist inside the nucleus, the energy is a. 10ev b. 10Mev c. 1Mev
27. Л+ = μ+ + νμ the nature of interaction is a. electromagnetic b. strong c. weak
28. If superconducting material is placed in magnetic field, a. magnetic field ejected from by material.
29. One question related to skin depth expression
30. Hartely oscillator has? 2 coils and 1 capacitor
31. The output of Ic 555 timer? A. square wave b. rectangle c. sine wave d. triangle wave
32. The accuracy of DA converter of 10 bit? A. 0.1 b= .01 c .0001
33. In transistor, β=100, Ic=10mA Ib=?
34. Si may not used in laser diodes, the reason is? A. direct band gap b. indirect band gap c. very expensive d. none of above
35. In LED, the material is used for manufacture a. GA As b. Ge c. si
36. For intrinsic and n type semi conductors a. ei=hi, n>p, ni2=ne np
37. Doping concentration of base a. lightly b. heavily
38. Before electric field is applied, the potential at the pn junction (depletion region) is..
39. In op-amp, the slope of input is greater than slew rate then the output is a. triangle wave b. square wave c. sine wave
40. The temperature coefficient of semiconductor a. dR/dt b. 1/R dR\dt c. R dR/dt
41. Pick correct one (A+B)¯ = A¯.B¯
42. The temperature coefficient for zener and avalanche breakdown voltage, negative and positive?
43. Due to strong potential across depletion region