A. move towards the centre of the circle B. stop moving immediately C. move along a circular path of smaller…
A. capacitance and inductance B. force ratio and velocity ratio C. friction and momentum D. energy and power E. electric…
A. Radioactive materials are stored in glass casings B. Radioactive materials are handled with remote-controlled tongs C. Technicians in nuclear…
A. Uranium and neutrons B. Radium and polonium C. Nitrogen and neutrons D. Uranium and α - particles. Correct Answer:…
I. Alpha particles II. Beta particles III. Gamma rays. A. I only B. II only C. I and II only…
A. 0.113s‾¹ B. 0.436 s‾¹ C. 0.139 s‾¹ D. 0.193 s‾¹ Correct Answer: Option C - 0.139 s‾¹
A. its average life time B. one-half the value of its decay constant. C. the length of time needed by…
A. 2.01 X 10^15Hz B. 1.06x10^15Hz C. 6.30 x 10^14Hz D. 1.60 x 10^14Hz Correct Answer: Option B - 1.06x10^15Hz
I. All elements emit and absorb characteristic spectra. II. Spectral analysis is an important method of identifying environmental pollutants. III.…
A. V B. IV C. III D. II Correct Answer: Option A - V