i. is a force ii. occurs between the surfaces of two bodies in contact iii. depends on the area in…
A. density[kg/m³] B. power[Js‾¹] C. specific latent heat [J kg‾¹K‾¹ D. Pressure [Nm‾¹] Correct Answer: Option B B. power[Js‾¹]
A. droplets of water dripping slowly from a tap B. mercury spilled on a clean glass plate forms spherical droplets…
A. F3 = F1 + F2 B. F2 = F1 + F3 C. F1 = F2 - F3 D. F1…
A. 13.0s B. 9.0s C. 5.1s D. 0.5s Correct Answer: Option B B. 9.0s Explanation t½ = 0.693/λ = 0.693/0.077…
A. absorb electrons B. absorb neutron C. accelerate electrons D. slow down neutrons Correct Answer: Option B B. absorb neutron
A. very high temperature is required for fusion B. the raw materials for fusion are easily obtained C. Energy obtained…
A. mass number decreases by 1 B. atomic number decreases by 1 C. mass number increases by 1 D. atomic…
i. can be produced by thermionic emission ii. have low frequencies iii. have short wavelengths. A. i only B.…
A. 0.5J B. 1.0J C. 2.5J D. 5.0J Correct Answer: Option D D. 5.0J Explanation P = I²L=5²×0.2 = 5J