The capacitance of an air filled parallel plate capacitor is 10μμF . The separation between the plates is doubled and the space between the plates is then filled with wax giving the capacitance a new value of 40
. The dielectric constant of wax is
|
(a) 12.0 |
(b) 10.0 |
(c) 8.0 |
(d) 4.2 |
(c) 8.0
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The output of a NAND gate is 0
|
(a) If both inputs are 0 |
|
(b) If one input is 0 and the other input is 1 |
|
(c) If both inputs are 1 |
|
(d) Either if both inputs are 1 or if one of the inputs is 1 and the other 0 |
The magnetic moment of atomic neon is
| (a) Zero | (b) μB/2 | (c) μB | (d) 3μB/2 |
The ratio of the energy of an X-ray photon of wavelength 1 Å to that of visible light of wavelength 5000 Å is
| (a) 1: 5000 | (b) 5000 : 1 | (c) 1 :25 × 106 | (d) 25 × 106 |
The truth table shown in figure is for
|
A |
0 |
0 |
1 |
1 |
|
B |
0 |
1 |
0 |
1 |
|
y |
1 |
0 |
0 |
1 |
|
(a) XOR |
(b) AND |
(c) XNOR |
(d) OR |
A fish rising vertically up towards the surface of water with speed 3 ms–1 observes a bird diving vertically down towards it with speed 9 ms–1. The actual velocity of bird is
|
(a) 4.5 ms–1 |
(b) 5. ms–1 |
(c) 3.0 ms–1 |
(d) 3.4 ms–1 |
The current in the given circuit is
|
(a) 0.1 A |
(b) 0.2 A |
(c) 0.3 A |
(d) 0.4 A |