Important MCQ's 2020 1)The centripetal acceleration of the bob of a conical pendulum is a) rg/cos thita b) rg/L c) g/L d)rg/L cos thita 2)A satellite in a circular orbit around the earth has a total energy E (E < O) . It's potential energy is a) -2E b) -E c) E d) 2E 3) The moment of inertia of a solid sphere of mass M and diameter d about an arbitrary axis a distance D from the centre of the sphere is a)mD^2 [1+0.1 (d/D)^2] b)mD^2 [1+0.4 (d/D)^2] c)mD^2 [1+0.1 (D/d)^2] d)mD^2 [1+0.4 (D/d)^2] । 4) The maximum speed and maximum acceleration of a particle executing SHM are 2 m/s and pya /2 m/s^2. The time period of the motion is a) 8s b) 7s c) 4s d) 7/pya s 5) If a wire made of a brittle metal is stretched beyond the proportional limit but within the elastic limit, then a) the strain is plastic. b) the strain is elastic and is linearly proportional to the stress. ...