147736
$\gamma$-rays pass through a strong uniform electric field. In which direction are they deflected?
1 In the direction of electric field
2 In the direction perpendicular to electric field
3 In the direction opposite to electric field
4 Do not get deflected
Explanation:
D Since, $\gamma$-rays particle are uncharged when it pass through uniform field it does not get deflected.
SCRA-2012
NUCLEAR PHYSICS
147737
Consider the following statements : 1.The penetrating power of $\alpha$-particle is less than that of $\beta$ particle. 2.Penetrating power of a particle is inversely proportional to its mass. Which one of the following is correct in respect of the above statements?
1 Both of the statements are true and statement2 is the correct explanation of statement-1
2 Both the statements are true but statement-2 is not the correct explanation of statement-1
3 Statement-1 is true, but statement-2 is false
4 Statement-1 is false, but statement-2 is true
Explanation:
A The penetrating power of a particle depends upon its ionization energy. It is inversely proportional to the ionization energy. Alpha particle have the greatest mass because of the large mass of the alpha particle, it has highest ionizing power and greatest ability to damage tissue. That same large size of alpha particles makes them less able to penetrate matter. Alpha particle have the least penetration power.
SCRA-2011
NUCLEAR PHYSICS
147739
$\beta$-decay means emission of electron from :
1 innermost electron orbit
2 a stable nucleus
3 outermost electron orbit
4 radioactive nucleus
Explanation:
D $\beta$-decay is a radioactive decay in which a beta ray is emitted from radioactive nucleus.
Karnataka CET-2009
NUCLEAR PHYSICS
147741
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. The other was created in a nuclear reactor 5 minutes ago. The probability of decay during the next time is :
1 different for each nuclei
2 nuclei created in explosion decays first
3 nuclei created in the reactor decays first
4 independent of the time of creation
Explanation:
D The half life $\left(t_{1 / 2}\right)$ and decay constant $(\lambda)$ remain constant, independent of time of creation of radioactive nuclei. So, the probability of decay remains same.
147736
$\gamma$-rays pass through a strong uniform electric field. In which direction are they deflected?
1 In the direction of electric field
2 In the direction perpendicular to electric field
3 In the direction opposite to electric field
4 Do not get deflected
Explanation:
D Since, $\gamma$-rays particle are uncharged when it pass through uniform field it does not get deflected.
SCRA-2012
NUCLEAR PHYSICS
147737
Consider the following statements : 1.The penetrating power of $\alpha$-particle is less than that of $\beta$ particle. 2.Penetrating power of a particle is inversely proportional to its mass. Which one of the following is correct in respect of the above statements?
1 Both of the statements are true and statement2 is the correct explanation of statement-1
2 Both the statements are true but statement-2 is not the correct explanation of statement-1
3 Statement-1 is true, but statement-2 is false
4 Statement-1 is false, but statement-2 is true
Explanation:
A The penetrating power of a particle depends upon its ionization energy. It is inversely proportional to the ionization energy. Alpha particle have the greatest mass because of the large mass of the alpha particle, it has highest ionizing power and greatest ability to damage tissue. That same large size of alpha particles makes them less able to penetrate matter. Alpha particle have the least penetration power.
SCRA-2011
NUCLEAR PHYSICS
147739
$\beta$-decay means emission of electron from :
1 innermost electron orbit
2 a stable nucleus
3 outermost electron orbit
4 radioactive nucleus
Explanation:
D $\beta$-decay is a radioactive decay in which a beta ray is emitted from radioactive nucleus.
Karnataka CET-2009
NUCLEAR PHYSICS
147741
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. The other was created in a nuclear reactor 5 minutes ago. The probability of decay during the next time is :
1 different for each nuclei
2 nuclei created in explosion decays first
3 nuclei created in the reactor decays first
4 independent of the time of creation
Explanation:
D The half life $\left(t_{1 / 2}\right)$ and decay constant $(\lambda)$ remain constant, independent of time of creation of radioactive nuclei. So, the probability of decay remains same.
147736
$\gamma$-rays pass through a strong uniform electric field. In which direction are they deflected?
1 In the direction of electric field
2 In the direction perpendicular to electric field
3 In the direction opposite to electric field
4 Do not get deflected
Explanation:
D Since, $\gamma$-rays particle are uncharged when it pass through uniform field it does not get deflected.
SCRA-2012
NUCLEAR PHYSICS
147737
Consider the following statements : 1.The penetrating power of $\alpha$-particle is less than that of $\beta$ particle. 2.Penetrating power of a particle is inversely proportional to its mass. Which one of the following is correct in respect of the above statements?
1 Both of the statements are true and statement2 is the correct explanation of statement-1
2 Both the statements are true but statement-2 is not the correct explanation of statement-1
3 Statement-1 is true, but statement-2 is false
4 Statement-1 is false, but statement-2 is true
Explanation:
A The penetrating power of a particle depends upon its ionization energy. It is inversely proportional to the ionization energy. Alpha particle have the greatest mass because of the large mass of the alpha particle, it has highest ionizing power and greatest ability to damage tissue. That same large size of alpha particles makes them less able to penetrate matter. Alpha particle have the least penetration power.
SCRA-2011
NUCLEAR PHYSICS
147739
$\beta$-decay means emission of electron from :
1 innermost electron orbit
2 a stable nucleus
3 outermost electron orbit
4 radioactive nucleus
Explanation:
D $\beta$-decay is a radioactive decay in which a beta ray is emitted from radioactive nucleus.
Karnataka CET-2009
NUCLEAR PHYSICS
147741
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. The other was created in a nuclear reactor 5 minutes ago. The probability of decay during the next time is :
1 different for each nuclei
2 nuclei created in explosion decays first
3 nuclei created in the reactor decays first
4 independent of the time of creation
Explanation:
D The half life $\left(t_{1 / 2}\right)$ and decay constant $(\lambda)$ remain constant, independent of time of creation of radioactive nuclei. So, the probability of decay remains same.
147736
$\gamma$-rays pass through a strong uniform electric field. In which direction are they deflected?
1 In the direction of electric field
2 In the direction perpendicular to electric field
3 In the direction opposite to electric field
4 Do not get deflected
Explanation:
D Since, $\gamma$-rays particle are uncharged when it pass through uniform field it does not get deflected.
SCRA-2012
NUCLEAR PHYSICS
147737
Consider the following statements : 1.The penetrating power of $\alpha$-particle is less than that of $\beta$ particle. 2.Penetrating power of a particle is inversely proportional to its mass. Which one of the following is correct in respect of the above statements?
1 Both of the statements are true and statement2 is the correct explanation of statement-1
2 Both the statements are true but statement-2 is not the correct explanation of statement-1
3 Statement-1 is true, but statement-2 is false
4 Statement-1 is false, but statement-2 is true
Explanation:
A The penetrating power of a particle depends upon its ionization energy. It is inversely proportional to the ionization energy. Alpha particle have the greatest mass because of the large mass of the alpha particle, it has highest ionizing power and greatest ability to damage tissue. That same large size of alpha particles makes them less able to penetrate matter. Alpha particle have the least penetration power.
SCRA-2011
NUCLEAR PHYSICS
147739
$\beta$-decay means emission of electron from :
1 innermost electron orbit
2 a stable nucleus
3 outermost electron orbit
4 radioactive nucleus
Explanation:
D $\beta$-decay is a radioactive decay in which a beta ray is emitted from radioactive nucleus.
Karnataka CET-2009
NUCLEAR PHYSICS
147741
Consider two nuclei of the same radioactive nuclide. One of the nuclei was created in a supernova explosion 5 billion years ago. The other was created in a nuclear reactor 5 minutes ago. The probability of decay during the next time is :
1 different for each nuclei
2 nuclei created in explosion decays first
3 nuclei created in the reactor decays first
4 independent of the time of creation
Explanation:
D The half life $\left(t_{1 / 2}\right)$ and decay constant $(\lambda)$ remain constant, independent of time of creation of radioactive nuclei. So, the probability of decay remains same.
