JEE & NEET

01. The metal detectors installed at airports and other places for security purpose are based on the principle of ________.

11. If the magnitude of the resultant force of two forces is lesser than the magnitude of the larger force,

21. If a current I given by I0sin(ωt−π2) flows across an AC circuit with potential E=E0sinωt, then what is the

31. Charged particle ‘q’ moving through a magnetic field with velocity V will have zero magnetic force when the angle

41. Why is copper a preferred choice in making electrical wires? A. Copper is a good conductor of electricity B.

51. Which of the following statements is true for a dielectric? A. Dielectrics are superconductors at high temperature B. Dielectrics

71. Find the dielectric constant for material with electric susceptibility of 5. A. 4 B. 6 C. 7 D. 3

61. Cyclotron can be used in _______. A. Particle therapy to treat cancer B. source of high energy beam for

81. The maximum impedance of a transmission line 50 ohm and the standing wave ratio of 2.5 is _______. A.

91. Which of the following statement is true if a body moves in a semicircular track whose radius is R.