Physics Mcqs for the preparation of NTS, PPSC, SPSC, BPSC, KPSC, FPSC, OTS and other academic entry test and jobs tests.
31. Good conductors have many loose bounds
(a) Atoms
(b) Protons
(c) Molecules
(d) Electrons
32. Which of the following is a physical change
(a) Boiling of Water
(b) Rusting of Iron
(c) Boiling of an Egg
(d) Burning of Candle
33. Which of the following is a good conductor of heat and electricity
(a) Diamond
(b) Anthracite
(c) Granite
(d) Graphite
34. The focal length of a convex lens is maximum for
(a) Blue
(b) Green
(c) Yellow
(d) Red
35. The fuse wire is generally made of
(a) Silver
(b) Copper
(c) Tin-lead alloy
(d) Silver & copper
36. Superconductivity is due to
(a) Electrons
(b) Protons
(c) Pair of electrons
(d) Neutrons
37. What constitute current in a metal wire
(a) Electrons
(b) Protons
(c) Atoms
(d) Molecules
38. Which one of the following is not a radioactive element
(a) Uranium
(b) Radium
(c) Thorium
(d) Cadmium
39. The resistance of carbon _______ with rise in the temperature
(a) Increases
(b) Decreases
(c) Remain the same
(d) Fluctuate
40. Metals are good conductors of heat because
(a) They have free electrons
(b) Their atoms are far apart
(c) Their atoms collide frequently
(d) They have reflecting surfaces
41. What is the color of red rose in green light
(a) Red
(b) Yellow
(c) Black
(d) Blue
42. The wire having a black plastic cover is a
(a) Live wire
(b) Neutral wire
(c) Earth wire
(d) None of these
43. When oil is spread on water surface, the surface tension
(a) Increases
(b) Decreases
(c) Remains the same
(d) Depends on the nature of oil
44. The various distribution circuits are connected in
(a) Series
(b) Parallel
(c) Series or parallel
(d) None of these
45. Which is the most dense planet of our solar system
(a) Sun
(b) Jupiter
(c) Mercury
(d) Earth
