Two capacitors of capacitance 2 μF and 3μF are joined in series. Outer plate first capacitor is at 1000 volt and outer plate of second capacitor is earthed (grounded). Now the potential on inner plate of each capacitor will be
|
(a) 700 Volt |
(b) 200 Volt |
(c) 600 Volt |
(d) 400 Volt |
(d) 400 Volt
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Resistance in the two gaps of a meter bridge are 10 ohm and 30 ohm respectively. If the resistances are interchanged the balance point shifts by
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(a) 33.3 cm |
(b) 66.67cm |
(c) 25 cm |
(d) 50 cm |
In an experiment to measure the internal resistance of a cell by potentiometer, it is found that the balance point is at a length of 2m when the cell is shunted by a 5 Ω resistance; and is at a length of 3m when the cell is shunted by a 10 Ω resistance. The internal resistance of the cell is, then
|
(a) 1.5 Ω |
(b) 10 Ω |
(c) 15 Ω |
(d) 1 Ω |
Magnetic dipole moment of a rectangular loop is
|
(a) Inversely proportional to current in loop |
|
(b) Inversely proportional to area of loop |
|
(c) Parallel to plane of loop and proportional to area of loop |
|
(d) Perpendicular to plane of loop and proportional to area of loop |
A parallel beam of monochromatic light is incident at one surface of a equilateral prism. Angle of incidence is 55° and angle of emergence is 46°. The angle of minimum deviation will be
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(a) Less than 41° |
(b) Equal to 41° |
(c) More than 41° |
(d) None of the above |
Potassium has a bcc structure with nearest neighbour distance 4.525 Å. Its molecular weight is 39. Its density in kg/m3 is
|
(a) 900 |
(b) 494 |
(c) 602 |
(d) 802 |
The kinetic energy of an electron with de-Broglie wavelength of 0.3 nanometer is
|
(a) 0.168 eV |
(b) 16.8 eV |
(c) 1.68 eV |
(d) 2.5 eV |