Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire systems is thermally insulated. The stop cock is suddenly opened. The Process is :
A
adiabatic
B
isochoric
C
isobaric
D
isothermal
2
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
For the logic circuit shown, the truth table is :
A
A
B
Y
0
0
0
0
1
1
1
0
1
1
1
1
B
A
B
Y
0
0
1
0
1
1
1
0
1
1
1
0
C
A
B
Y
0
0
1
0
1
0
1
0
0
1
1
0
D
A
B
Y
0
0
0
0
1
0
1
0
0
1
1
1
3
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
The solids which have the negative temperature coefficient of resistance are :
A
insulators only
B
semiconductors only
C
insulators and semiconductors
D
metals
4
NEET 2020 Phase 1
MCQ (Single Correct Answer)
+4
-1
A series LCR circuit is connected to an ac voltage source. When L is removed from the circuit, the phase difference between current and voltage is $${\pi \over 3}$$. If instead C is
removed from the circuit, the phase difference is again $${\pi \over 3}$$
between current and voltage. The power factor of the circuit is :
