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Assertion (A): For most metals, Fermi energy E_{F} is less than 10 eV. Reason (R): Fermi level of a metal is given by E_{F} = 3.64 x 10^{-19} (n)^{2/3} where n is number of free electrons/m^{3} of metal. | |
A. | Both A and R are true and R is correct explanation of A [Correct Answer] |
B. | Both A and R are true but R is not correct explanation of A [Wrong Answer] |
C. | A is true but R is false [Wrong Answer] |
D. | A is false but R is true [Wrong Answer] |
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Explanation:-
Answer : A Discuss it below : !! OOPS Login [Click here] is required to post your answer/result |
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⇒ The circuit in the given figur
half adder
full adder
half subtractor
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⇒ A decade counter
counts for ten days
counts ten times faster than a binary counters
counts to 9 and reset on the next pulse
reverts on the pulse after the tenth
⇒ A short circuited stub is preferred to an open circuited stub because an open circuited stub
is more difficult to fabricate and construct
is made of transmission line of different Z_{0}
is liable to radiate
is incapable of giving full range of reactance
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aperiodic
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both a and b
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casual
non-casual
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increases
decreases
remains constant
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LED
LCD
VF
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Helical
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0.05
0.5
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500
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TRUE
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dc output voltage and rms output voltage decrease in the same proportion
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X + Y + Z
XY + Z + X YZ
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2 rad/sec
1 rad/sec
0.5 rad/sec
0.25 rad/sec
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TRUE
FALSE
⇒ Hall effect is observed in a specimen (metal or semi- conductor) when it is carrying current and is placed in a magnetic field. The resultant electric field inside the specimen is
normal to both current and magnetic field
in the same direction as current
in a direction anti parallel to magnetic field
none of the above
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25, 0.7, 0.3
25, 0.7, - 0.3
24, 17.5, 7.5
25, 8.75, 3.75
⇒ The initial state of MOD-16 down counter is 011. After 37 clock pulses, the state of the counter will be
1011
110
101
1
⇒ The logic represented by the abbreviation ECL is
Emitter Coupled Logic
Electron Carrier Logic
Encoding Clock Logic
Electrostatic Channel Logic
⇒ ECL has high switching speed because the transistors are
switching between cutoff and saturation regions
switching between cutoff and active regions
switching between active and saturation regions
none of the above
⇒ Electric dipole moment is expressed in debye unit.
TRUE
FALSE