Physics Nios plus two I Welcome to your Physics Nios plus two I Total Questions: 50 Name Mobile No: 1. The Value of dielectric constant or relative permittivity all the above Ɛr=1 Ɛr>1 Ɛr None Hint 2. Which of the following statement is true Radioactive elements cannot be produced in the laboratory Radioactivity is a spontaneous process Radioactivity is a statistical process Radioactivity is a neutral characteristic of some element None Hint 3. The Lithium atom has 3 electrons. The third electron will be in M -shell N –shell L-shell K -shell None Hint 4. The work function for photoelectric effect Is different for different metal Is same for all metal Depends upon the frequency of incident light None of the above None Hint 5. Colours of thin films result from Interference of light Absorption of light Dispersion of light Scattering of light None Hint 6. Does pressure depend on the shape of vessel None of the above May be Yes No None Hint 7. Nuclear energy is released in fission because binding energy per nucleon is ? Smaller for fission fragment than for parent nucleus Greater for fission fragment than for parent nucleus Same for fission fragment and nucleus None of the above None Hint 8. In a transformer the energy losses result from Magnetization heating of the core during repeated reversal of magnetization - hysteresis loss. Resistive heating in copper coils - cooper loss, Flux leakage from the core. Eddy current losses in form of heating of iron core - Eddy current loss. None Hint 9. Colour of sky appears blue its due to As extent of scattering of blue light is more it enters our eyes Shorter wavelength of blue colour The size of fine particle in atmosphere is almost equal to wavelength of blue colour All of these None Hint 10. The capacitance of a capacitor will decrease if we introduce a slab of: copper zinc None of these aluminium None Hint 11. Dimension of coefficient of viscosity MLT-1 MLT-2 ML-1T -1 None Hint 12. Field inside a solenoid is Inversely proportional to current Directly proportional to current Directly proportional to its length Inversely proportional to total number of turns None Hint 13. A tuning fork of unknown frequency gives 5 beats per second with another tunning of 500 Hz. Frequency of unknown fork in Hz 490,510 495,500 5 500,505 495,505 None Hint 14. Fission of a nucleus is achieved by bombarding it with Neutrons X-ray Protons Electrons None Hint 15. In parallel combination the current passing through each resistor is low Different Zero Same None Hint 16. Which of the following are known as universal gates? AND & OR NAND & NOR XOR & OR EX-NOR & XOR None Hint 17. Photo electric effect predict that light is made of Photons All the three mentioned in A, B, C Neutrons Electrons None Hint 18. The temperatures of inside and outside of a refrigerator are 273 K and 303 K respectively. Assuming, that the refrigerator cycle is reversible, for every joule of work done, the heat delivered to the surrounding will be nearly: 20 J 50 J 30 J 10 J None Hint 19. Voltage feedback in feedback amplifier is proportional to Output voltage Square of output voltage Square of grid voltage Grid voltage None Hint 20. When a capacitor is being charged the charged current Decrease Increase Constant Incomplete data None Hint 21. Radioactive substance does not emit Beta rays Gamma rays Alpha rays Neutrons None Hint 22. The magnetic field near a current carrying conductor is given by Coulomb’s law Kirchoff’s law Biot-savart’s law Lenz’ law None Hint 23. A magnetic field can be produced by None of these A moving charge Both of these A changing electric field None Hint 24. A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will increase remain the same become zero decrease None Hint 25. The saturation current in a diode can be increased by Lowering plate potential Increasing cathode temperature Decreasing cathode temperature Raising plate potential None Hint 26. Ohm’s law is not applicable to High current Semiconductor Dc circuit Small resistance None Hint 27. During an adiabatic process, the pressure of a gas is found to be proportional to the cube of its absolute temperature. The ratio Cp/Cv for the gas is 3/2 5/3 4/3 2 None Hint 28. Transverse wave can be transmitted in a&b solid surface of liquid gases None Hint 29. The phenomenon of scattering of light by the colloidal particle is known as Newton’s ring Tyndal effect Spectral effect Raman effect None Hint 30. The half-life of a radioactive elements depend on Pressure Temperature Nature of element Quantity of radioactive element None Hint 31. In Zener diode, the Zener breakdown voltage takes place at All of the above Above 6 v At 6 v Below 6 V None Hint 32. Which colour will be observed by a astronaut travelling in space Indico Blue Black Green None Hint 33. If charge q is taken positive than direction of electric field E is no changes away from charge Toward charge none of the above None Hint 34. Dimension of Surface Tension is M -1T -2 MT-2 MT2 MT-1 None Hint 35. Resistance are connected in end to end in ? Random combination Parallel combination Circular combination Series combination None Hint 36. The interference of two light wave is constructive if Two waves are obtained from two different sources Two waves are in opposite phase Two waves are in same phase Two waves are perpendicular to each other None Hint 37. The Helium atom does not contain Two proton Two neutrons Six nucleon Two electron None Hint 38. Which of the following is a good moderator Graphite Cadmium Ordinary water Helium None Hint 39. According to Bohr’s model of Hydrogen atom The angular momentum of the electron is quantized The linear velocity of the electron is quantized. The angular velocity of the electron is quantized The linear momentum of the electron is quantized None Hint 40. If L and R represents inductance and resistance respectively, then dimension of L/R will be T -1 LT L None of the above None Hint 41. Which of the following parameters dose not characterize the thermodynamic state of matter? volume work pressure Temperature None Hint 42. Rutherford in his experiment bombarded thin metallic foils by α-Particles Electron neutron proton None Hint 43. For rectifying action, we use Transformer Condenser Diode Choke None Hint 44. SI unit of permittivity of free space C 2N -1m-1 C 1N -1m-2 C 2N -2m-2 C 2N -1m-2 None Hint 45. The velocity of the photoelectrons depends upon Frequency of photon only None of the above Intensity and frequency of the incident photon Intensity of the incident photon None Hint 46. The colour which is scattered most in atmosphere is Green Red Yellow Blue None Hint 47. Interference of two light waves can be observed with the help of a Spectrometer Prism Photometer Michelson experiment None Hint 48. The point where amplitude is maximum but the strain is minimum called successive node nodes antinodes none of the above None Hint 49. Can a diode valve be used as an oscillator Some times with another diode None of the above Yes No None Hint 50. Dielectric constant for a metal is 1 infinite zero 10 None Hint Time's up Share: admin Previous post Test 1 May 26, 2025 Next post Test 2 May 27, 2025
