Radioactive A nuclear reaction is given by (fig.) , represents (a) fission (b) beta-decay (c) alpha -decay (d) fusion Ruhul Amin Alig
Radioactive The 'rad' is the correct unit used to report the measurement of (a) the ability of a beam of gamma ray photons to produce ions in a target (b) the energy delivered by radiation to a target (c) the biological effect of radiation (d) the rate of decay of a radioactive source Ruhul Amin Alig
Radioactive Three specimens A, B, C of same radioactive element has activities 1 microcurie, 1 rutherford and 1 becquerel respectively. Which specimen has maximum mass? (a) A (b) B (c) C (d) all have equal masses Ruhul Amin Alig
Radioactive N atoms of a radioactive element emit n number α- particle per second. Mean life of the elements in second is : Ruhul Amin Alig
Radioactive N atoms of a radioactive element emit n alpha particles per second. The half-life of the element is Ruhul Amin Alig
Radioactive The rate of disintegration at a given instant, is directly proportional to the number of atoms present at that instant. This is the statement of (a) law of radioactive decay (b) half life (c) law of radioactive transformation (d) group displacement law Ruhul Amin Alig
Radioactive A radioactive material undergoes decay by ejecting electrons. The electron ejected in this process is (a) the electron from the decay of a neutron (b) the electron present in the nucleus (c) the resulting from the conversion of J photon (d) an orbital electron Ruhul Amin Alig
Radioactive The process of radioactive radiations remains unaffected due to (a) physical changes (b) chemical changes (c) electric or magnetic fields (d) all of the above Ruhul Amin Alig
Radioactive Radioactive samples are stored in lead boxes because it is (a) heavy (b) strong (c) good absorber (d) bad conductor Ruhul Amin Alig
Radioactive Artificial radioactivity was discovered by (a) Klaproth (b) Rontgen (c) Irene Curie and Joliot (d) P. Curie and M. Curie Ruhul Amin Alig
Radioactive 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 Ruhul Amin Alig
Radioactive The half-life period and the mean life period of a radioactive element are denoted respectively by Th and Tm . Then Ruhul Amin Alig
Radioactive Beta rays emitted by a radioactive material are (a) electromagnetic radiations (b) the electrons orbiting around the nucleus (c) charged particles emitted by nucleus (d) neutral particles Ruhul Amin Alig
Radioactive Gamma-rays are deflected by (a) an electric field but not by a magnetic field (b) a magnetic field but not by an electric field (c) both electric and magnetic field (d) neither by electric field nor by magnetic field Ruhul Amin Alig
Radioactive The antiparticle of electron is (a) positron (b) alpha-particle (c) proton (d) beta-particle Ruhul Amin Alig
Radioactive Neutron decay in free space is given as follows , then Then the parenthesis [ ] represents a (a) neutrino (b) photon (c) antineutrino (d) graviton Ruhul Amin Alig
![Neutron decay in free space is given as follows , then Then the parenthesis [ ] represents a (a) neutrino (b) photon (c) antineutrino (d) graviton](https://blogger.googleusercontent.com/img/a/AVvXsEhnaAkqIvQN2GlZ2_5dl3_O14tT9CFOG8RGWhraDUkZXx34sGMkTz-yuUmy5gE0jfF9vEZtHrBauccjSCmYKWpZIjVKDYb3DxD1kugrmuZrcVoGW598hWK6yA6tucXApJW1lhwp-Yhqu3T85ey2l4EpSf-p38lPviXKpVYkdjP7UhblVcObgwd3EvNVkw=w74-h74-p-k-no-nu)
