12583 + Mcqs in Physics Page 88 McqOptions

4351.	Order of magnitude of density of uranium nucleus is \[({{m}_{p}}=1.67\times {{10}^{-27}}kg)\] [MP PET 1995; IIT-JEE 1999; MP PMT 2000; UPSEAT 2003]
A.	\[{{10}^{20}}kg/{{m}^{3}}\]
B.	\[{{10}^{17}}kg/{{m}^{3}}\]
C.	\[{{10}^{14}}kg/{{m}^{3}}\]
D.	\[{{10}^{11}}kg/{{m}^{3}}\]
Answer» C. \[{{10}^{14}}kg/{{m}^{3}}\]

Discussion

4352.	Outside a nucleus [MP PET 1999; CPMT 2000; BHU 2000]
A.	Neutron is stable
B.	Proton and neutron both are stable
C.	Neutron is unstable
D.	Neither neutron nor proton is stable
Answer» D. Neither neutron nor proton is stable

Discussion

4353.	In \[_{88}R{{a}^{226}}\]nucleus, there are [MP PMT/PET 1998]
A.	138 protons and 88 neutrons
B.	138 neutrons and 88 protons
C.	226 protons and 88 electrons
D.	226 neutrons and 138 electrons
Answer» C. 226 protons and 88 electrons

Discussion

4354.	The mass number of a nucleus is equal to the number of [MP PET 1996]
A.	Electrons it contains
B.	Protons it contains
C.	Neutrons it contains
D.	Nucleons it contains
Answer» E.

Discussion

4355.	The binding energies per nucleon for a deuteron and an \[\alpha -\]particle are x1 and x2 respectively. What will be the energy Q released in the reaction \[_{1}{{H}^{2}}{{+}_{1}}{{H}^{2}}{{\to }_{2}}H{{e}^{4}}+Q\] [CBSE PMT 1995]
A.	\[4({{x}_{1}}+{{x}_{2}})\]
B.	\[4({{x}_{2}}-{{x}_{1}})\]
C.	\[2({{x}_{1}}+{{x}_{2}})\]
D.	\[2({{x}_{2}}-{{x}_{1}})\]
Answer» C. \[2({{x}_{1}}+{{x}_{2}})\]

Discussion

4356.	Equivalent energy of mass equal to 1 a.m.u. is [CBSE PMT 1992; MP PET 1988, 2002; MP PMT 1994, 98, 2004; RPET 1997; RPMT 2000]
A.	931 KeV
B.	931 eV
C.	931 MeV
D.	9.31 MeV
Answer» D. 9.31 MeV

Discussion

4357.	Which of the following pairs is an isobar [MP PET 1994]
A.	\[_{1}{{H}^{1}}\]and \[_{1}{{H}^{2}}\]
B.	\[_{1}{{H}^{2}}\]and \[_{1}{{H}^{3}}\]
C.	\[_{6}{{C}^{12}}\]and \[_{6}{{C}^{13}}\]
D.	\[_{15}{{P}^{30}}\]and \[_{14}S{{i}^{30}}\]
Answer» E.

Discussion

4358.	One requires energy \[{{E}_{n}}\]to remove a nucleon from a nucleus and an energy \['{{E}_{e}}'\]to remove an electron from the orbit of an atom. Then [NCERT 1981]
A.	\[{{E}_{n}}={{E}_{e}}\]
B.	\[{{E}_{n}}<{{E}_{e}}\]
C.	\[{{E}_{n}}>{{E}_{e}}\]
D.	\[{{E}_{n}}\ge {{E}_{e}}\]
Answer» D. \[{{E}_{n}}\ge {{E}_{e}}\]

Discussion

4359.	The example of nuclear fusion is [BCECE 2005]
A.	Formation of Ba and Kr from U235
B.	Formation of He from H
C.	Formation of Pu ? 235 from U - 235
D.	Formation of water from hydrogen and oxygen
Answer» C. Formation of Pu ? 235 from U - 235

Discussion

4360.	If radius of the \[_{13}^{27}Al\] nucleus is estimated to be 3.6 Fermi then the radius of \[_{52}^{125}Te\]nucleus be nearly [AIEEE 2005]
A.	4 Fermi
B.	5 Fermi
C.	6 Fermi
D.	8 Fermi
Answer» D. 8 Fermi

Discussion

4361.	In any fission process the ratio \[\frac{\text{mass of fission products}}{\text{mass of parent nucleus}}\] is [CBSE PMT 2005]
A.	Less than 1
B.	Greater than 1
C.	Equal to 1
D.	Depends on the mass of the parent nucleus
Answer» B. Greater than 1

Discussion

4362.	Fission of nuclei is possible because the binding energy per nucleon in them [CBSE PMT 2005]
A.	Increases with mass number at high mass numbers
B.	Decreases with mass number at high mass numbers
C.	Increases with mass number at low mass numbers
D.	Decreases with mass number at low mass numbers
Answer» C. Increases with mass number at low mass numbers

Discussion

4363.	Which of the following is most unstable [AFMC 2005]
A.	Electrons
B.	Protons
C.	Neutrons
D.	\[\alpha \]-particle
Answer» D. \[\alpha \]-particle

Discussion

4364.	In the reaction \[_{1}^{2}H+_{1}^{3}H\to _{2}^{4}He+_{0}^{1}n\]. If the tending energies of \[_{1}^{2}H,\text{ }_{1}^{3}H\text{ and }_{2}^{4}He\] are respectively \[a,\text{ b and }c\] (in MeV), then the energy (in MeV) released in this reaction is [CBSE PMT 2005]
A.	\[c+a-b\]
B.	\[c-a-b\]
C.	\[a+b+c\]
D.	\[a+b-c\]
Answer» C. \[a+b+c\]

Discussion

4365.	If the mass number of an atom is \[A=40\] and its electron configuration is \[1{{s}^{2}},\ 2{{s}^{2}},\ 2{{p}^{6}},\ 3{{s}^{2}},\ 3{{p}^{6}}\], the number of neutrons and protons in its nucleus will be [RPMT 2002]
A.	22, 18
B.	18, 22
C.	20, 20
D.	18, 18
Answer» B. 18, 22

Discussion

4366.	The atoms of same element having different masses but same chemical properties, are called [RPMT 2002]
A.	Isotones
B.	Isotopes
C.	Isobars
D.	Isomers
Answer» C. Isobars

Discussion

4367.	If in a nuclear fission, piece of uranium of mass 0.5 g is lost, the energy obtained in kWh is [Pb. PET 2003]
A.	\[1.25\times {{10}^{7}}\]
B.	\[2.25\times {{10}^{7}}\]
C.	\[3.25\times {{10}^{7}}\]
D.	\[0.25\times {{10}^{7}}\]
Answer» B. \[2.25\times {{10}^{7}}\]

Discussion

4368.	Binding energy of a nucleus is
A.	Energy given to its nucleus during its formation
B.	Total mass of nucleus converted to energy units
C.	Loss of energy from the nucleus during its formation
D.	Total K.E. and P.E. of the nucleons in the nucleus
Answer» D. Total K.E. and P.E. of the nucleons in the nucleus

Discussion

4369.	The energy in MeV is released due to transformation of 1 kg mass completely into energy \[(c=3\times {{10}^{8}}m/s)\] [Pb. PMT 2003]
A.	\[7.625\times 10\,MeV\]
B.	\[10.5\times {{10}^{29}}\,MeV\]
C.	\[2.8\times {{10}^{-28}}\,MeV\]
D.	\[5.625\times {{10}^{29}}\,MeV\]
Answer» E.

Discussion

4370.	Which of the following cannot cause fission in a heavy nucleus [RPET 2002]
A.	a-particle
B.	Proton
C.	Deutron
D.	Laser rays
Answer» E.

Discussion

4371.	The curve of binding energy per nucleon as a function of atomic mass number has a sharp peak for helium nucleus. This implies that helium [DCE 2004]
A.	Can easily be broken up
B.	Is very stable
C.	Can be used as fissionable material
D.	Is radioactive
Answer» C. Can be used as fissionable material

Discussion

4372.	A nucleus is bombarded with a high speed neutron so that resulting nucleus is a radioactive one. This phenomenon is called [DCE 2004]
A.	Artificial radioactivity
B.	Fusion
C.	Fission
D.	Radioactivity
Answer» D. Radioactivity

Discussion

4373.	What is used as a moderator in a nuclear reactor [DCE 2004]
A.	Water
B.	Graphite
C.	Cadmium
D.	Steel
Answer» C. Cadmium

Discussion

4374.	In a nuclear reactor, the fuel is consumed at the rate of 1 mg/s. The power generated in kilowatt is [DCE 2003]
A.	\[9\times {{10}^{4}}\]
B.	\[9\times {{10}^{7}}\]
C.	\[9\times {{10}^{8}}\]
D.	\[9\times {{10}^{12}}\]
Answer» C. \[9\times {{10}^{8}}\]

Discussion

4375.	A nucleus of \[_{84}^{210}Po\] originally at rest emits a particle with speed v. What will be the recoil speed of the daughter nucleus [DCE 2002]
A.	4v/206
B.	4v/214
C.	v/206
D.	v/214
Answer» B. 4v/214

Discussion

4376.	The nucleus \[_{92}{{U}^{234}}\] splits exactly in half in a fission reaction in which two neutrons are released. The resultant nuclei are [UPSEAT 2004]
A.	\[_{46}P{{d}^{116}}\]
B.	\[_{45}R{{h}^{117}}\]
C.	\[_{45}R{{h}^{116}}\]
D.	\[_{46}P{{d}^{117}}\]
Answer» B. \[_{45}R{{h}^{117}}\]

Discussion

4377.	The binding energy of deuteron \[_{1}^{2}H\]is 1.112 MeV per nucleon and an \[\alpha -\]particle \[_{2}^{4}He\]has a binding energy of 7.047 MeV per nucleon. Then in the fusion reaction\[_{1}^{2}H+_{1}^{2}H\to _{2}^{4}He+Q\], the energy Q released is [MP PMT 1992; Roorkee 1994; IIT 1996; AIIMS 1997]
A.	1 MeV
B.	11.9 MeV
C.	23.8 MeV
D.	931 MeV
Answer» D. 931 MeV

Discussion

4378.	1 atomic mass unit is equal to [Pb. PET 2001]
A.	\[\frac{1}{25}\] (mass of \[{{F}_{2}}\] molecules)
B.	\[\frac{1}{14}\] (mass of \[{{N}_{2}}\] molecules)
C.	\[\frac{1}{12}\] (mass of one C-atom)
D.	\[\frac{1}{16}\] (mass of \[{{O}_{2}}\] molecules)
Answer» D. \[\frac{1}{16}\] (mass of \[{{O}_{2}}\] molecules)

Discussion

4379.	Nuclear fusion is common to the pair [CPMT 2004]
A.	Thermonuclear reactor, uranium based nuclear reactor
B.	Energy production in sun, uranium based nuclear reactor
C.	Energy production in sun, hydrogen bomb
D.	Disintegration of heavy nuclei, hydrogen bomb
Answer» D. Disintegration of heavy nuclei, hydrogen bomb

Discussion

4380.	Complete the reaction\[n+\,_{92}^{235}U\to \,_{56}^{144}Ba+....+3n\] [Kerala PMT 2004]
A.	\[_{36}^{89}Kr\]
B.	\[_{36}^{90}Kr\]
C.	\[_{36}^{91}Kr\]
D.	\[_{36}^{92}Kr\]
Answer» B. \[_{36}^{90}Kr\]

Discussion

4381.	\[_{6}^{12}C\] absorbs an energetic neutron and emits beta particles. The resulting nucleus is [Kerala PMT 2004]
A.	\[_{7}^{14}N\]
B.	\[_{7}^{13}N\]
C.	\[_{5}^{13}B\]
D.	\[_{6}^{13}C\]
Answer» C. \[_{5}^{13}B\]

Discussion

4382.	The principle of controlled chain reaction is used in [Orissa PMT 2004]
A.	Atomic energy reactor
B.	Atom bomb
C.	The core of sun
D.	Artificial radioactivity
Answer» B. Atom bomb

Discussion

4383.	If in a nuclear fusion process the masses of the fusing nuclei be \[{{m}_{1}}\] and \[{{m}_{2}}\] and the mass of the resultant nucleus be \[{{m}_{3}}\], then [CPMT 1982; CBSE PMT 2004]
A.	\[{{m}_{3}}={{m}_{1}}+{{m}_{2}}\]
B.	\[{{m}_{3}}=\ \|{{m}_{1}}+{{m}_{2}}\|\]
C.	\[{{m}_{3}}<({{m}_{1}}+{{m}_{2}})\]
D.	\[{{m}_{3}}>({{m}_{1}}+{{m}_{2}})\]
Answer» D. \[{{m}_{3}}>({{m}_{1}}+{{m}_{2}})\]

Discussion

4384.	\[{{M}_{p}}\] denotes the mass of a proton and \[{{M}_{n}}\] that of a neutron. A given nucleus, of binding energy B, contains Z protons and N neutrons. The mass M(N, Z) of the nucleus is given by (c is the velocity of light) [CBSE PMT 2004]
A.	\[M(N,\,Z)=N{{M}_{n}}+Z{{M}_{p}}-B{{c}^{2}}\]
B.	\[M(N,\,Z)=N{{M}_{n}}+Z{{M}_{p}}+B{{c}^{2}}\]
C.	\[M(N,\,Z)=N{{M}_{n}}+Z{{M}_{p}}-B/{{c}^{2}}\]
D.	\[M(N,\,Z)=N{{M}_{n}}+Z{{M}_{p}}+B/{{c}^{2}}\]
Answer» D. \[M(N,\,Z)=N{{M}_{n}}+Z{{M}_{p}}+B/{{c}^{2}}\]

Discussion

4385.	If M is the atomic mass and A is the mass number, packing fraction is given by [KCET 2004]
A.	\[\frac{A}{M-A}\]
B.	\[\frac{A-M}{A}\]
C.	\[\frac{M}{M-A}\]
D.	\[\frac{M-A}{A}\]
Answer» E.

Discussion

4386.	Heavy water is [KCET 2004]
A.	Water at \[{{4}^{o}}C\]
B.	Compound of deuterium and oxygen
C.	Compound of heavy oxygen and heavy hydrogen
D.	Water, in which soap does not lather
Answer» C. Compound of heavy oxygen and heavy hydrogen

Discussion

4387.	The nuclear reactor at Kaiga is a [KCET 2004]
A.	Fusion reactor
B.	Research reactor
C.	Power reactor
D.	Breeder reactor
Answer» D. Breeder reactor

Discussion

4388.	Mark the correct statement [MP PMT 2004]
A.	Nuclei of different elements can have the same number of neutrons
B.	Every element has only two stable isotopes
C.	Only one isotope of each element is stable
D.	All isotopes of every element are radioactive
Answer» B. Every element has only two stable isotopes

Discussion

4389.	The average binding energy per nucleon in the nucleus of an atom is approximately [EAMCET 1988; CBSE PMT 1992; CPMT 1999; RPET 2002]
A.	8 eV
B.	8 KeV
C.	8 MeV
D.	8 J
Answer» D. 8 J

Discussion

4390.	The binding energy of nucleus is a measure of its [MP PMT 2004
A.	Charge
B.	Mass
C.	Momentum
D.	Stability
Answer» E.

Discussion

4391.	Solar energy is mainly caused due to [CBSE PMT 2003]
A.	Fission of uranium present in the sun
B.	Fusion of protons during synthesis of heavier elements
C.	Gravitational contraction
D.	Burning of hydrogen in the oxygen
Answer» C. Gravitational contraction

Discussion

4392.	Light energy emitted by stars is due to [Orissa JEE 2003]
A.	Breaking of nuclei
B.	Joining of nuclei
C.	Burning of nuclei
D.	Reflection of solar light
Answer» C. Burning of nuclei

Discussion

4393.	Work of moderator is [AFMC 2003]
A.	To control the velocity of neutrons
B.	Cooling
C.	As fuel
D.	It is used for safety
Answer» B. Cooling

Discussion

4394.	A nuclear reaction given by \[_{Z}{{X}^{A}}\,\to {{\,}_{Z+1}}{{Y}^{A}}{{+}_{-1}}{{e}^{0}}+\bar{p}\] represents [CBSE PMT 2003]
A.	g-decay
B.	Fusion
C.	Fission
D.	b-decay
Answer» E.

Discussion

4395.	A deutron is bombarded on \[_{8}{{O}^{16}}\] nucleus and a-particle is emitted. The product nucleus is [CBSE PMT 2002]
A.	\[_{7}{{N}^{13}}\]
B.	\[_{5}{{B}^{10}}\]
C.	\[_{4}B{{c}^{9}}\]
D.	\[_{7}{{N}^{14}}\]
Answer» E.

Discussion

4396.	Which of the following are suitable for the fusion process [CBSE PMT 2002]
A.	Heavy nuclei
B.	Light nuclei
C.	Atom bomb
D.	Radioactive decay
Answer» C. Atom bomb

Discussion

4397.	A \[{{\pi }^{0}}\] at rest decays into \[2\gamma \] rays \[{{\pi }^{0}}\to \gamma +\gamma \]. Then which of the following can happen [CPMT 2002]
A.	The two \[\gamma 's\] move in same direction
B.	The two \[\gamma 's\] move in opposite direction
C.	Both repel each other
D.	Both attract each other
Answer» C. Both repel each other

Discussion

4398.	In the following reaction the value of ?X? is \[_{7}{{N}^{14}}{{+}_{2}}H{{e}^{4}}\,\to \,X{{+}_{1}}{{H}^{1}}\] [DPMT 1999; CPMT 2003]
A.	\[_{8}{{N}^{17}}\]
B.	\[_{8}{{O}^{17}}\]
C.	\[_{7}{{O}^{16}}\]
D.	\[_{7}{{N}^{16}}\]
Answer» C. \[_{7}{{O}^{16}}\]

Discussion

4399.	The nuclear reaction \[^{2}H{{+}^{2}}H\to {{\,}^{4}}He\] (mass of deuteron = 2.0141 a.m.u. and mass of He = 4.0024 a.m.u.) is [Orissa JEE 2002]
A.	Fusion reaction releasing 24 MeV energy
B.	Fusion reaction absorbing 24 MeV energy
C.	Fission reaction releasing 0.0258 MeV energy
D.	Fission reaction absorbing 0.0258 MeV energy
Answer» B. Fusion reaction absorbing 24 MeV energy

Discussion

4400.	One microgram of matter converted into energy will give [CPMT 1984; EAMCET (Engg.) 1995; SCRA 1994; BVP 2003]
A.	90 J
B.	\[9\times {{10}^{3}}\]J
C.	\[9\times {{10}^{10}}\]J
D.	\[9\times {{10}^{5}}\]J
Answer» D. \[9\times {{10}^{5}}\]J

Discussion

Explore topic-wise MCQs in Joint Entrance Exam - Main (JEE Main).

Order of magnitude of density of uranium nucleus is \[({{m}_{p}}=1.67\times {{10}^{-27}}kg)\] [MP PET 1995; IIT-JEE 1999; MP PMT 2000; UPSEAT 2003]

Outside a nucleus [MP PET 1999; CPMT 2000; BHU 2000]

In \[_{88}R{{a}^{226}}\]nucleus, there are [MP PMT/PET 1998]

The mass number of a nucleus is equal to the number of [MP PET 1996]

The binding energies per nucleon for a deuteron and an \[\alpha -\]particle are x1 and x2 respectively. What will be the energy Q released in the reaction \[_{1}{{H}^{2}}{{+}_{1}}{{H}^{2}}{{\to }_{2}}H{{e}^{4}}+Q\] [CBSE PMT 1995]

Equivalent energy of mass equal to 1 a.m.u. is [CBSE PMT 1992; MP PET 1988, 2002; MP PMT 1994, 98, 2004; RPET 1997; RPMT 2000]

Which of the following pairs is an isobar [MP PET 1994]

One requires energy \[{{E}_{n}}\]to remove a nucleon from a nucleus and an energy \['{{E}_{e}}'\]to remove an electron from the orbit of an atom. Then [NCERT 1981]

The example of nuclear fusion is [BCECE 2005]

If radius of the \[_{13}^{27}Al\] nucleus is estimated to be 3.6 Fermi then the radius of \[_{52}^{125}Te\]nucleus be nearly [AIEEE 2005]

In any fission process the ratio \[\frac{\text{mass of fission products}}{\text{mass of parent nucleus}}\] is [CBSE PMT 2005]

Fission of nuclei is possible because the binding energy per nucleon in them [CBSE PMT 2005]

Which of the following is most unstable [AFMC 2005]

In the reaction \[_{1}^{2}H+_{1}^{3}H\to _{2}^{4}He+_{0}^{1}n\]. If the tending energies of \[_{1}^{2}H,\text{ }_{1}^{3}H\text{ and }_{2}^{4}He\] are respectively \[a,\text{ b and }c\] (in MeV), then the energy (in MeV) released in this reaction is [CBSE PMT 2005]

If the mass number of an atom is \[A=40\] and its electron configuration is \[1{{s}^{2}},\ 2{{s}^{2}},\ 2{{p}^{6}},\ 3{{s}^{2}},\ 3{{p}^{6}}\], the number of neutrons and protons in its nucleus will be [RPMT 2002]

The atoms of same element having different masses but same chemical properties, are called [RPMT 2002]

If in a nuclear fission, piece of uranium of mass 0.5 g is lost, the energy obtained in kWh is [Pb. PET 2003]

Binding energy of a nucleus is

The energy in MeV is released due to transformation of 1 kg mass completely into energy \[(c=3\times {{10}^{8}}m/s)\] [Pb. PMT 2003]

Which of the following cannot cause fission in a heavy nucleus [RPET 2002]

The curve of binding energy per nucleon as a function of atomic mass number has a sharp peak for helium nucleus. This implies that helium [DCE 2004]

A nucleus is bombarded with a high speed neutron so that resulting nucleus is a radioactive one. This phenomenon is called [DCE 2004]

What is used as a moderator in a nuclear reactor [DCE 2004]

In a nuclear reactor, the fuel is consumed at the rate of 1 mg/s. The power generated in kilowatt is [DCE 2003]

A nucleus of \[_{84}^{210}Po\] originally at rest emits a particle with speed v. What will be the recoil speed of the daughter nucleus [DCE 2002]

The nucleus \[_{92}{{U}^{234}}\] splits exactly in half in a fission reaction in which two neutrons are released. The resultant nuclei are [UPSEAT 2004]

1 atomic mass unit is equal to [Pb. PET 2001]

Nuclear fusion is common to the pair [CPMT 2004]

Complete the reaction\[n+\,_{92}^{235}U\to \,_{56}^{144}Ba+....+3n\] [Kerala PMT 2004]

\[_{6}^{12}C\] absorbs an energetic neutron and emits beta particles. The resulting nucleus is [Kerala PMT 2004]

The principle of controlled chain reaction is used in [Orissa PMT 2004]

If in a nuclear fusion process the masses of the fusing nuclei be \[{{m}_{1}}\] and \[{{m}_{2}}\] and the mass of the resultant nucleus be \[{{m}_{3}}\], then [CPMT 1982; CBSE PMT 2004]

\[{{M}_{p}}\] denotes the mass of a proton and \[{{M}_{n}}\] that of a neutron. A given nucleus, of binding energy B, contains Z protons and N neutrons. The mass M(N, Z) of the nucleus is given by (c is the velocity of light) [CBSE PMT 2004]

If M is the atomic mass and A is the mass number, packing fraction is given by [KCET 2004]

Heavy water is [KCET 2004]

The nuclear reactor at Kaiga is a [KCET 2004]

Mark the correct statement [MP PMT 2004]

The average binding energy per nucleon in the nucleus of an atom is approximately [EAMCET 1988; CBSE PMT 1992; CPMT 1999; RPET 2002]

The binding energy of nucleus is a measure of its [MP PMT 2004

Solar energy is mainly caused due to [CBSE PMT 2003]

Light energy emitted by stars is due to [Orissa JEE 2003]

Work of moderator is [AFMC 2003]

A nuclear reaction given by \[_{Z}{{X}^{A}}\,\to {{\,}_{Z+1}}{{Y}^{A}}{{+}_{-1}}{{e}^{0}}+\bar{p}\] represents [CBSE PMT 2003]

A deutron is bombarded on \[_{8}{{O}^{16}}\] nucleus and a-particle is emitted. The product nucleus is [CBSE PMT 2002]

Which of the following are suitable for the fusion process [CBSE PMT 2002]

A \[{{\pi }^{0}}\] at rest decays into \[2\gamma \] rays \[{{\pi }^{0}}\to \gamma +\gamma \]. Then which of the following can happen [CPMT 2002]

In the following reaction the value of ?X? is \[_{7}{{N}^{14}}{{+}_{2}}H{{e}^{4}}\,\to \,X{{+}_{1}}{{H}^{1}}\] [DPMT 1999; CPMT 2003]

The nuclear reaction \[^{2}H{{+}^{2}}H\to {{\,}^{4}}He\] (mass of deuteron = 2.0141 a.m.u. and mass of He = 4.0024 a.m.u.) is [Orissa JEE 2002]

One microgram of matter converted into energy will give [CPMT 1984; EAMCET (Engg.) 1995; SCRA 1994; BVP 2003]