In the given circuits Y and Z, the resistors, R₁ and R₂, are connected in :

1. series in both the circuits
2. parallel in both the circuits
3. parallel in Y and series in Z
4. series in Y and parallel in Z

A radioactive element P emits one α-particle and transforms to a new element Q. What will be the position of the element Q in the periodic table?

1. One group to the left of P
2. One group to the right of P
3. Two groups to the right of P
4. Two groups to the left of P

The following figure shows a small bar magnet falling freely through a copper ring. For the observer at A, the direction of the induced current will be :

1. clockwise when magnet is above and below the ring
2. anticlockwise when magnet is above and below the ring
3. anticlockwise when magnet is above the ring and clockwise when the magnet is below the ring
4. clockwise when magnet is above the ring and anticlockwise when the magnet is below the ring

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

(a) In uniform circular motion the centrifugal force acts …………… [towards the centre/away from the centre/along the tangential direction].

(b) Refractive index of a medium is independent of …………… [temperature/angle of incidence/wavelength of light].

(c) Heat absorbed during change of phase depends on …………… [mass/change in temperature/specific heat capacity] of the substance.

(d) Emf of a cell is …………… [greater than/less than/equal to] the terminal voltage when the cell is in open circuit.

(e) In a step-up transformer the turns ratio is …………… [more than 1/ less than 1/ equal to 1].

(f) The nuclear radiation with lowest ionising power is …………… [α/β/γ]