NDA 2015 Paper 2 | Physics Question 12 | General Science

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)

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

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

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

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

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

The loudness of sound is related to

its frequency

its amplitude

its speed

its pitch

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

X-rays are electromagnetic radiation whose wavelengths are of the order of

1 m

10^$$-$$1 m

10^$$-$$5 m

10^$$-$$10 m

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

In case of a compound microscope, which of the following statements is/are correct?

1. The focal length of the eyepiece is larger than the focal length of the objective.

2. The focal length of the eyepiece is smaller than the focal length of the objective.

3. The image produced in a normal optical microscope is real.

4. The image produced in a normal optical microscope is virtual.

Select the correct answer using the codes given below.

Only 1

1 and 4

2 and 3

2 and 4

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