PW Solutions
An observer A sees an asteroid with a radioactive element moving by at a speed =0.3 c and measures the radioactivity decay time to be T_A. Another observer B is moving with the asteroid and measures its decay time as T_B. Then T_A and T_B are related as below [VITEEE 2008]
(a) T_BT_A
(b) T_B=T_A
(c) T_BT_A
(d) Either (a) or (c) depending on whether the asteroid is approaching or moving away from A
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