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