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Mdcat-past-papers - DUHS - Physics Quiz

Filters: Board: DUHS | Subject: Physics |
41. If the wavelength of a light is 3 × 10⁻⁷ m, then what is its frequency?



42. The energy of light is determined by its:



43. The product of frequency and wavelength of a wave equals to:



44. An object moving faster than the speed of sound. This object is called:



45. The speed of sound at 0°C in air is 332m/s. What will be the speed of sound at 50°C?



46. Two transverse travelling waves are presented by these equations. y₁ = A₀sin(Kx−ωt) and y₂ = A₀sin(kx−ωt−Ø). These two waves differ in:



47. Longitudinal waves exhibit:



48. If the fundamental frequency of vibration of a string fixed at both ends is 50Hz, the fourth harmonic will be:



49. In standing waves, the distance between two consecutive nodes or anti-nodes is:



50. Applications of Doppler's effect:



51. The ratio of molar specific heat of a gas at constant pressure to its molar specific heat at constant volume is:



52. Specific heat capacity of a gas is measured in:



53. The property of the system that does not change during adiabatic change is:



54. Which law has a graph similar to the graph of isothermal process?



55. The process in which no external work is performed is called:



56. First law of thermodynamics is mathematically represented as:



57. Two similar point charges, each of 1 coulomb, placed in free space 1m apart, repel each other with a force of



58. Which law explains the relation between amount of charges and force between them?



59. Consider three-point charges A, B, and C as shown in figure. If the resultant force on charge B due to charge A and charge C is 0.024 N, the direction of resultant force will be



60. The electric field intensity between two uniform, oppositely charged parallel plates is:



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