Bohr’s atomic model proves most successful for the explanation of the… Which of the statements above is/are correct?
I. structure of the hydrogen atom; II. line spectra of the hydrogen atom; III. Multi-electron atoms. A. I only B. II only C. I and II only D. I and III only Correct Answer: Option C – I and II only
A point charge of magnitude 2μC is moved through a distance of 0.02 m against uniform field of intensity 25 Vm‾ ¹. Calculate the work done on the charge
A. 5.0 x 10^6J B. 1.0 x10^-6J C. 5.0 x10^-7J D. 1.0 x 10^-2J Correct Answer: Option B – 1.0 x10^-6JA 10- Ω coil takes 21 s to melt 10g of ice at 0°C. Assuming no heat losses, determine the current in the coil. (Specific latent heat of fusion of ice = 336 Jg-1)
A. 16A B. 5A C. 4A D. 3A Correct Answer: Option C – 4AIn a uniform electric field, the magnitude of the force on a charge of 0.2 C is 4N. Calculate the electric field intensity?
A. 20 N C¯¹ B. 8 N C¯¹ C. 5 N C¯¹ D. 2 N C¯¹ Correct Answer: Option A – 20 N C¯¹Products
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