NDA General Ability 18 April 2021 | Physics Question 388 | General Science

General Science

Physics

Chemistry

Biology

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Which one of the following conclusions could not be derived from Rutherford's α-particle scattering experiment?

Most of the space in the atom is empty

The radius of the atom is about 10⁵ times the radius of the nucleus

Electrons move in a circular path of fixed energy called orbits

Nearby all the mass of the atom resides in the nucleus

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Twinkling of stars is due to

Particular frequencies of the starlight

reflection of starlight from the oceanic surface

atmospheric refraction of starlight

magnetic field of Earth

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

Which one of the following cannot be the unit of frequency of a sound wave?

s^-1

min^-1

NDA General Ability 18 April 2021

MCQ (Single Correct Answer)

-1.33

'Beats' is a phenomenon that occurs when frequencies of two harmonic waves are

equal

far apart

multiples of each other

nearly same

Questions Asked from Marks 4