JEE Main Physics MCQs - Part 5

Questions 41-50 of 100

41. The dimensions of universal gravitational constant G are:

42. The percentage errors in the measurement of mass and speed are 2% and 3% respectively. The maximum error in the estimate of kinetic energy is:

43. A car covers half the distance at speed v₁ and the other half at speed v₂. Its average speed is:

44. A particle of mass m is moving in a circular path of radius r with constant speed v. The work done by the centripetal force in half a revolution is:

45. The maximum speed with which a car can take a turn on a banked road of radius R and angle θ (ignoring friction) is:

46. A wire of length L and cross-sectional area A is stretched by a force F. If its Young's modulus is Y, the work done in stretching the wire by length l is:

47. The excess pressure inside a soap bubble of radius R and surface tension T is:

48. Bernoulli's principle is based on the law of conservation of:

49. The first law of thermodynamics is a special case of the law of conservation of:

50. In an adiabatic process, the relation between pressure P and volume V is given by (where γ = C_p / C_v):

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