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