Q.41 An alpha particle with kinetic energy 20 MeV is heading towards a stationary tin nucleus of atomic number 50, Compute the distance of closest approach?Ans A. 7.2 fmB. 14.4 fmC. 3.6 ...

Q.40 A circular coil of wire consisting of 500 turns, each of radius 6.0 cm carries a current of 0.30 A. Find the magnitude of the magnetic field B at the center of the coil?Ans A.

Q.32Ans A.B.C.D.Correct Ans Provided: D

Q.39Ans A.B.C.D.Correct Ans Provided: B

Q.35 Given figure shows velocity-time graph of a ball of mass 250g rolling on a concrete floor. Compute the acceleration and the frictional force of the floor on the ball?Ans A.

Q.34Ans A.B.C.D.Correct Ans Provided: B

Q.36 ____________ use radio waves to transmit voice communication in the ultrahigh frequency band.Ans A. Cellular phonesB. FMC. AMD. TV wavesCorrect Ans Provided: A

Q.37 A parallel plate capacitor made of circular plates each of radius R = 6.0 cm has a capacitance C = 100 pF. The capacitor is connected to a 230 V AC supply with an (angular) frequency of ...

Q.42 A radio can tune in to any station in the 6 MHz to 10 MHz band. Find the corresponding wavelength band?Ans A. 100 m to 60 mB. 36 m to 100 mC. 50 m to 30 mD. ...

Q.28 If an event E has only one sample point of a sample space, it is called a ______Ans A. Compound eventsB. Sure eventsC. Simple eventsD. Impossible eventsCorrect Ans Provided: C