NDA 2018 Paper 2 | Physics Question 126 | General Science

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)

p' = p

p' = 2p

p' = p/2

p' = p/4

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?

1 nm = 10^$$-$$1$$\mathop A\limits^o $$

1 nm = 10$$\mathop A\limits^o $$

1 nm = 1$$\mathop A\limits^o $$

1 nm = 10^$$-$$2$$\mathop A\limits^o $$

NDA 2018 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

The full form of LED is

Light Emitting Diode

Light Emitting Device

Light Enhancing Device

Light Enhancing Diode

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

1.6 $$\times$$ 10^$$-$$19 J

1.6 $$\times$$ 10^$$-$$16 J

1 $$\times$$ 10^$$-$$19 J

1 $$\times$$ 10^$$-$$16 J

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