Complete the following by choosing the correct answers from the bracket:

(a) The ideal mechanical advantage of a single movable pulley is …………… [less than 1 / more than 1 / equal to 1].

(b) If different colours of light strike a rectangular glass block at same angle of incidence, then maximum lateral displacement will be shown by …………… [Red / Green / Blue] colour.

(c) 1 joule equals to …………… [0.24 / 0.48 / 4.2] calorie.

(d) The hole in the right side of the socket is for connection to the …………… [live / neutral / earth] wire.

(e) The direction of the induced current in the coil of an AC generator is determined by …………… [Fleming’s left-hand rule / Fleming’s right-hand rule / Clock Rule].

(f) In a nuclear reactor, the fission reaction is initiated by bombardment with …………… [a proton / a neutron / an α particle].

Will the position of the centre of gravity change if a hollow sphere is completely filled with mercury? Give a reason for your answer.

State the potential of the wire connected to the right hand side terminal of the three pin plug and also state its colour.

State two properties of magnetic lines of force around a straight conductor carrying current.