61 When a body moves in a straight line then its displacement coincides with__________________? Physics Medium Full question → A distance B force C acceleration is zero D both A and B
62 Momentum depends upon__________________? Physics Medium Full question → A force acts on the body B mass of the body C velocity of the body D both mass and velocity of the body
63 2nd law of motion gives the definition of________________? Physics Medium Full question → A force B acceleration C velocity D both force and acceleration
64 Newtons laws do not hold good for particles_______________? Physics Medium Full question → A at rest B moving slowly C move with high velocity D move with velocity comparable to velocity of light
65 Which law of motion is also called law of inertia ? Physics Medium Full question → A 1st law B 2nd law C 3rd law D all 1st, 2nd and 3rd laws
66 Slope of velocity time graph is_____________________? Physics Medium Full question → A acceleration B distance C force D momentum
67 When velocity time graph is a straight line parallel to time axis then__________________? Physics Medium Full question → A acceleration is const B acceleration is variable C acceleration is zero D velocity is zero
68 A body is moving with uniform velocity. Its______________________? Physics Medium Full question → A speed changes B acceleration changes C direction of motion changes D displacement from origin changes
69 Why Ballistic missile fails in some circumstances of precision ? Physics Medium Full question → A due to their shape B due to air resistance C due to angle of projection D all of these
70 Time rate of change of momentum is equal to____________________? Physics Medium Full question → A force B impulse C velocity D both A and C
71 At which angle the range of the projectile is maximum____________________? Physics Medium Full question → A 45 B 60 C 30 D none
72 Flight of a rocket in the space is an example of______________________? Physics Medium Full question → A second law of motion B third law of motion C first law of motion D law of gravitation
73 Distance covered by a freely falling body in 2 seconds will be__________________? Physics Medium Full question → A 4.9 m B 19.6 m C 39.2 m D 44.1 m
74 What is the angle of projection for which the range and maximum height become equal ? Physics Medium Full question → A tan-1 ¼ B tan-1 4 C tan-1 ½ D tan-1 2
75 Taking off rocket can be explained by __________________? Physics Medium Full question → A 1st law of motion B 2nd law of motion C Law of conservation of momentum D law of conservation of energy
76 Which shows the correct relation between time of flight T and maximum height H ? Physics Medium Full question → A H=gT2/8 B H=8T2/g C H=8g/T2 D H=gT2
77 What is the shape of velocity, time graph for constant acceleration ? Physics Medium Full question → A straight inclined line. B parabola C inclined curve D declined curve
78 Which one of the following bulbs has the least resistance ? Physics Medium Full question → A 100 watt B 200 watt C 300 watt D 60 watt
79 A fuse is placed in series with the circuit to protect against__________________? Physics Medium Full question → A high power B high voltage C high current D over heating
80 Electrical energy is converted to heat at the rate of___________________? Physics Medium Full question → A IRt B I2R C I2Rt D VIt