1
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
A stainless steel chamber contains Ar gas at a temperature T and pressure p. The total number of Ar atoms in the chamber is n. Now, Ar gas in the chamber is replaced by CO2 gas and the total number of CO2 molecules in the chamber is n/2 at the same temperature T. The pressure in the chamber now is p'. Which one of the following relation holds true? (Both the gases behave as an ideal gas)
A
p' = p
B
p' = 2p
C
p' = p/2
D
p' = p/4
2
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the correct relation between $$\mathop A\limits^o $$ and nm?
A
1 nm = 10$$-$$1$$\mathop A\limits^o $$
B
1 nm = 10$$\mathop A\limits^o $$
C
1 nm = 1$$\mathop A\limits^o $$
D
1 nm = 10$$-$$2$$\mathop A\limits^o $$
3
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The full form of LED is
A
Light Emitting Diode
B
Light Emitting Device
C
Light Enhancing Device
D
Light Enhancing Diode
4
NDA 2018 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If a free electron moves through a potential difference of 1 kV, then the energy gained by the electron is given by
A
1.6 $$\times$$ 10$$-$$19 J
B
1.6 $$\times$$ 10$$-$$16 J
C
1 $$\times$$ 10$$-$$19 J
D
1 $$\times$$ 10$$-$$16 J
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