Subject: Physics (Part-ii) Time: 40 Min chapter # 21 mcq’s for entry test


The rest mass energy of an electron is A. 0.510 keV B. 0.510 M eV C. 931 keV D. 931 M eV 35



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Ch[1]. No. 21
34. The rest mass energy of an electron is

A. 0.510 keV B. 0.510 M eV

C. 931 keV D. 931 M eV
35. The nuclei 613C and 714N may be described as

A. isobars B. isotopes of C

C. isotones D. isotopes of N
36. If R is the radius and is the A mass number, then log R versus log A graph will be

A. a straight line B. a parabola

C. an ellipse D. none of these
37. Nuclear weak force is experienced during

A. α decay B. β decay

C. γ decay D. all a, b and c
38. During β- decay

A. an atomic electron is ejected

B. an electron already present in the nucleus is ejected

C. a proton decays to give electron

D. a neutron decays to give electron


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