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