A. real and magnified B. real and inverted C. erect and magnified D. erect and virtual Correct Answer: Option B…
A. inverted B. erect C. real D. virtual Correct Answer: Option D D. virtual Explanation Any image that can be…
A. light must travel from an optical less dense to a denser medium B. the angle of incidence must be…
A. 68.0Hz B. 225.0Hz C. 1000Hz D. 750.0Hz Correct Answer: Option C C. 1000Hz Explanation V = s/t=900/3=300m\s f =…
A. increased four times B. doubled C. unchangeable D. halved Correct Answer: Option D D. halved
A. weakens the adhesive force between molecules of a liquid and those of its container B. breaks completely the force…
A. change the temperature of 1kg of the calorimeter by 1k B. change 1kg mass of the calorimeter to liquid…
A. 4mm B. 3mm C. 2mm D. 1mm Correct Answer: Option B B. 3mm Explanation I2−I1=I1, θα−1×100×3×10^−5 = 3 x…
A. 14.0Ω B. 6.7Ω C. 3.2Ω D. 2.7Ω Correct Answer: Option B B. 6.7Ω Explanation (R−4)/(10−4) = (45−0)/(100−0) R =…
A. that can provide electric current B. which can only carry people from one place to another C. with which…