Three capacitors each of capacitance 1μF are connected in parallel. To this combination, a fourth capacitor of capacitance 1μF is connected in series. The resultant capacitance of the system is
|
(a) 4μF |
(b) 2μF |
(c) |
(d) |
(d) 
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The unit of electric permittivity is
|
(a) Volt/m2 |
(b) Joule/coulomb |
(c) Farad/m |
(d) Henry/m |
An atom of mass number 15 and atomic number 7 captures an α - particle and then emits a proton. The mass number and atomic number of the resulting product will respectively be
|
(a) 14 and 2 |
(b) 15 and 3 |
(c) 16 and 4 |
(d) 18 and 8 |
A curve between magnetic moment and temperature of magnet is
|
(a)
|
(b)
|
(c)
|
(d)
|
A film projector magnifies a 100 cm2 film strip on a screen. If the linear magnification is 4, the area of magnified film on the screen is
|
(a) 1600 cm2 |
(b) 400 cm2 |
(c) 800 cm2 |
(d) 200 cm2 |
A conductor in the form of a right angle ABC with AB = 3 cm and BC = 4 cm carries a current of 10 A. There is a uniform magnetic field of 5 T perpendicular to the plane of the conductor. The force on the conductor will be
|
(a) 1.5 N |
(b) 2.0 N |
(c) 2.5 N |
(d) 3.5 N |
