The masses of neutron and proton are 1.0087 a.m.u. and 1.0073 a.m.u. respectively. If the neutrons and protons combine to form a helium nucleus (alpha particle) of mass 4.0015 a.m.u. The binding energy of the helium nucleus will be (1 a.m.u.= 931 MeV) :
(1) 28.4 MeV
(2) 20.8 MeV
(3) 27.3 MeV
(4) 14.2 MeV
Atomic power station at Tarapore has a generating capacity of 200 MW. The energy generated in a day by this station is
(1) 200 MW
(2) 200 J
(3) 4800×106 J
(4) 1728×1010 J
One nanogram of matter converted into energy will give-
(1) 90 J
(2) 9×103 J
(3) 9×1010 J
(4) 9×104 J
The binding energy of deuteron H21 is 1.112 MeV per nucleon and an α-particle He42 has a binding energy of 7.047 MeV per nucleon. Then in the fusion reaction H21+H21→He42+Q, the energy Q released is
(1) 1 MeV
(2) 11.9 MeV
(3) 23.8 MeV
(4) 931 MeV
Binding energy of a nucleus is:
(1) Energy given to its nucleus during its formation
(2) Total mass of nucleus converted to energy units
(3) Loss of energy from the nucleus during its formation
(4) Total K.E. and P.E. of the nucleons in the nucleus
Which of the following pairs is an isobar
(1) H11 and H21
(2) H21 and H31
(3) C126 and C136
(4) P3015 and Si3014
Equivalent energy of mass equal to 1 a.m.u. is
(1) 931 KeV
(2) 931 eV
(3) 931 MeV
(4) 9.31 MeV
The mass number of a nucleus is equal to the number of
(1) Electrons it contains
(2) Protons it contains
(3) Neutrons it contains
(4) Nucleons it contains
1. | 510 KeV | 2. | 931 KeV |
3. | 510 MeV | 4. | 931 MeV |
In Ra22688 nucleus, there are
(1) 138 protons and 88 neutrons
(2) 138 neutrons and 88 protons
(3) 226 protons and 88 electrons
(4) 226 neutrons and 138 electrons