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