A ball of mass 0.1kg approaching a tennis player with a velocity of 10ms−¹, is hit back in the opposite…
A. 0.8rads−¹ B. 2 rads−¹ C. 4 rads−¹ D. 8 rads−¹ E. 16 rads−¹ Correct Answer: Option C - 4…
A. 17.3ms−² B. 20ms−² C. 24.5ms−² D. 125ms−² E. 200ms−² Correct Answer: Option B = 20ms−² Explanation v²=u²+2as = 0+2×(25−5)…
A. De Broglie's law B. Heisenberg's uncertainty principle C. Compton effect D. Frank-Hertz experimental law E. Wave-particle paradox Correct Answer:…
Two radioactive elements X and Y have half-lives of 100 and 50 years respectively. Samples of X and Y initially…
A. capillarity B. turbulence C. diffusion D. osmosis E. viscosity Correct Answer: Option E - viscosity
A. ionization B. excitation C. field emission D. photoemission E. thermionic emission Correct Answer: Option B - excitation
A. 5.22 cm B. 5.24 cm C. 5.26 cm D. 5.35 cm Correct Answer: Option C - 5.26 cm
A. adhesion between water and glass molecules is greater than the adhesion between water molecules B. cohesion between water molecules…
A. along the line joining the point to the neutral point B. always away from the south pole of the…