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