NDA 2015 Paper 2 | Physics Question 9 | General Science

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Two forces, one of 3 N and another of 4 N are applied on a standard 1 kg body, placed on a horizontal and frictionless surface, simultaneously along the X-axis and the Y-axis, respectively, as shown below.

Image

The magnitude of the resultant acceleration is

7 m/s²

1 m/s²

5 m/s²

$$\sqrt 7 $$ m/s²

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Magnetic meridian is an imaginary

line along North-South

point

vertical plane

horizontal plane

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

In SI unit of force 'newton' (N) is given by (where, 'kg' stands for 'kilogram' 'm' stands for 'metre' and 's' stands for 'second')

1 N = 2 kg-ms^$$-$$2

1 N = 1 kg-ms^$$-$$2

1 N = 4 kg-ms^$$-$$2

1 N = 3 kg-ms^$$-$$2

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

The acceleration due to gravity 'g' for objects on or near the surface of earth is related to the universal gravitational constant 'G' as ('M' is the mass of the earth and 'R' is its radius)

$$G = {{gM} \over {{R^2}}}$$

$$g = {{GM} \over {{R^2}}}$$

$$M = {{gG} \over {{R^2}}}$$

$$R = {{gG} \over {{M^2}}}$$

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