NDA 2015 Paper 2 | Physics Question 17 | General Science

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following statements is not correct?

If the velocity and acceleration have opposite sign, then the object is slowing down.

If the velocity is zero at an instant, then the acceleration should also be zero at that instant.

If the velocity is zero for a time interval, then the acceleration is zero at any instant within the time interval.

If the position and velocity have opposite sign, then the object is moving towards the origin.

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Three equal resistances when combined in series are equivalent to 90$$\Omega$$. Their equivalent resistance when combined in parallel will be

10$$\Omega$$

30$$\Omega$$

270$$\Omega$$

810$$\Omega$$

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

The following figure represents the velocity-time graph of a moving car on a road.

Image

Which segment of the graph represents the retardation?

None of these

NDA 2015 Paper 2

MCQ (Single Correct Answer)

+2.5

-0.83

Which one of the following statements is not correct?

The Kelvin scale of temperature is called the absolute scale.

Visible light radiation has wavelength range of 400-700 nm.

The capacity to do work is called power.

The wavelength of $$\gamma$$-rays is less than the wavelength of X-rays.

NDA Subjects

English

General Science

General Studies