KCET 2022 | Atoms and Nuclei Question 7 | Physics

In accordance with the Bohr's model, the quantum number that characterises the Earth's revolution around the Sun in an orbit of radius $$1.5 \times 10^{11} \mathrm{~m}$$ with orbital speed $$3 \times 10^4 \mathrm{~ms}^{-1}$$ is [given, mass of Earth $$=6 \times 10^{24} \mathrm{~kg}$$]

$$2.57 \times 10^{38}$$

$$8.57 \times 10^{64}$$

$$2.57 \times 10^{74}$$

$$5.98 \times 10^{86}$$

KCET 2022

MCQ (Single Correct Answer)

-0

If an electron is revolving in its Bohr orbit having Bohr radius of 0.529$$\mathop A\limits^o $$, then the radius of third orbit is

4496$$\mathop A\limits^o $$

4.761$$\mathop A\limits^o $$

$$5125 \mathrm{~nm}$$

$$4234 \mathrm{~nm}$$

KCET 2022

MCQ (Single Correct Answer)

-0

Binding energy of a nitrogen nucleus $$\left[{ }_7^{14} \mathrm{~N}\right]$$, given $$m\left[{ }_7^{14} \mathrm{~N}\right]=14.00307 \mathrm{u}$$

$$85 \mathrm{~MeV}$$

$$206.5 \mathrm{~MeV}$$

$$78 \mathrm{~MeV}$$

$$104.7 \mathrm{~MeV}$$

KCET 2022

MCQ (Single Correct Answer)

-0

Which of the following radiations is deflected by electric field?

Neutrons

$$\gamma$$-rays

$$\alpha$$-particles

X-rays

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