1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
If $${M_O}$$ is the mass of an oxygen isotope $${}_8{O^{17}}$$ , $${M_p}$$ and $${M_N}$$ are the masses of a proton and neutron respectively, the nuclear binding energy of the isotope is
A
$$\left( {{M_O} - 17{M_N}} \right){C^2}$$
B
$$\left( {{M_O} - 8{M_P}} \right){C^2}$$
C
$$\left( {{M_O} - 8{M_P} - 9{M_N}} \right){C^2}$$
D
$${{M_O}{c^2}}$$
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In gamma ray emission from a nucleus
A
only the proton number changes
B
both the neutron number and the proton number change
C
there is no change in the proton number and the neutron number
D
only the neutron number changes
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Photon of frequency $$v$$ has a momentum associated with it. If $$c$$ is the velocity of light, the momentum is
A
$$hv/c$$
B
$$v/c$$
C
$$h$$ $$v$$ $$c$$
D
$$hv/{c^2}$$
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
The half-life period of a ratio-active element $$X$$ is same as the mean life time of another ratio-active element $$Y.$$ Initially they have the same number of atoms. Then
A
$$X$$ and $$Y$$ decay at same rate always
B
$$X$$ will decay faster than $$Y$$
C
$$Y$$ will decay faster than $$X$$
D
$$X$$ and $$Y$$ have same decay rate initially
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