NEET 2020 Phase 1 | Atoms and Nuclei Question 20 | Physics

NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

The energy equivalent of 0.5 g of a substance is :

$$4.5 \times {10^{13}}J$$

$$1.5 \times {10^{13}}J$$

$$0.5 \times {10^{13}}J$$

$$4.5 \times {10^{16}}J$$

NEET 2019

MCQ (Single Correct Answer)

-1

$$\alpha $$-particale consists of :

2 electrons, 2 protons and 2 neutrons

2 electrons and 4 protons only

2 protons only

2 protons and 2 neutrons only

NEET 2019

MCQ (Single Correct Answer)

-1

The total energy of an electron in an atom in an orbit is –3.4 eV. Its kinetic and potential energies are, respectively.

3.4 eV, – 6.8 eV

3.4 eV, 3.4 eV

– 3.4 eV, – 3.4 eV

– 3.4 eV, – 6.8 eV

NEET 2018

MCQ (Single Correct Answer)

-1

The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is

1 : 1

1 : -1

2 : -1

1 : -2

NEET Subjects

Biology

Botany

Zoology