Choose the correct answer from the given options.
(i) Waves carry:
* Energy and matter both * Only matter
* Only energy but not matter * Neither energy nor matter
(ii) Total capacitance, of four capacitors each of 4pF in series is:
* 4 pF *16pF * 1pF * 1/4pF
(iii) A circuit in which the path is complete and there is a flow of current in the entire path:
* Closed-circuit * Open-Circuit *Short-circuit * Zero circuit
(iv) The "normal" hearing frequency range is
* 50HZ to 100HZ * 2.5HZ to 60KHZ * 2.5HZ to 5.5HZ. * 20HZ to 20KHZ
(v) The charge of each alpha particle is _____ times the charge of proton:
* Two * Four * Eight
(vi) For step-up Transformer.
*Ns > Np * Ns = Np . • Ns < Np * Np > Ns
(vii) ICT stand for
* information and communication technology * integrated circular technology * interfacing computer theories *intensive computer techniques
(viii) The focal length of a magnifying glass is 25cm. its power is:
*25D *2.5D * 4D *160D
(ix) _____ wave is required medium.
* Ultraviolet * Infrared * Radio waves *mechanical wave
(x) Human eye acts like ______
*Camera *Projector *Telescope *Microscope
(xi) The cause of echo is
*Reflection. *Refraction *Diffusion * Diffraction
(xii) ohm’s law is not applicable to:
*Semi conductor *DC circuit *Small resistor *High current
