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