When a current of 1 ampere is passed through a conductor whose ends are maintained at temperature difference of 1 ℃, the amount of heat evolved or absorbed is called
|
(a) Peltier coefficient |
(b) Thomson coefficient |
|
(c) Thermoelectic power |
(d) Thermo e.m.f. |
(b) Thomson coefficient
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The k line of singly ionised calcium has a wavelength of 393.3 nm as measured on earth. In the spectrum of one of the observed galaxies, this spectral line is located at 401.8 nm. The speed with which the galaxy is moving away from us, will be
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(a) 6480 km/s |
(b) 3240 km/s |
(c) 4240 km/sec |
(d) None of these |
To get an output 1 from the circuit shown in the figure, the input must be
|
(a) A = 0, B = 1, C = 0 |
(b) A = 1, B = 0, C = 0 |
(c) A = 1, B = 0, C = 1 |
(d) A = 1, B = 1, C = 0 |