NDA 2016 Paper 1 | Physics Question 63 | General Science

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

A container is first filled with water and then the entire water is replaced by mercury. Mercury has a density of 13.6 $$\times$$ 10³ kg/m³. If X is the weight of the water and Y is the weight of the mercury, then

X = Y

X = 13.6Y

Y = 13.6X

None of these

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

Density of water is

maximum at 0$$^\circ$$C

minimum at 0$$^\circ$$C

maximum at 4$$^\circ$$C

minimum at $$-$$4$$^\circ$$C

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

Suppose the force of gravitation between two bodies of equal masses is F. If each mass is doubled keeping the distance of separation between them unchanged, then the force would become

$${1 \over 4}$$F

NDA 2016 Paper 1

MCQ (Single Correct Answer)

+2.5

-0.83

A body has a free fall from a height of 20 m. After falling through a distance of 5 m, then body would

lose one-fourth of its total energy

lose one-fourth of its potential energy

gain one-fourth of its potential energy

gain three-fourth of its total energy

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