Physics
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]
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Answer
(a) In uniform circular motion the centrifugal force acts away from the centre.
(b) Refractive index of a medium is independent of angle of incidence.
(c) Heat absorbed during change of phase depends on mass of the substance.
(d) Emf of a cell is 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.
(f) The nuclear radiation with lowest ionising power is γ.
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