Download App

MHT-CET PCM 10 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CETMHT-CET PCM 101 Mark
MCQ
When hydrogen atom is in its first excited level, its radius is how many time its ground state radius?
  • A
    half
  • ✓
    four times
  • C
    same
  • D
    twice
✓

Answer

Correct option: B.
four times
B

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "MCQ" from MHT-CET PCM 10→MHT-CET PCM 10 — all question types→MHT - CET STD 12 Science question papers→Maharashtra Board STD 12 Science question papers→Maharashtra Board question paper generator→

Similar questions

A cyclotron's oscillator frequency is 'n' and radius of the dees is 'r'. The operating magnetic field (B) for accelerating protons of charge 'q' and kinetic energy of protons produced by the accelerator is respectively ('m' and 'v' be the mass and velocity of proton).
→
A particle executes the simple harmonic motion with an amplitude 'A'. The distance travelled by it in one periodic time is ______.
→
If `bar"a" = 3hat"i" - 2hat"j" + 7hat"k", bar"b" = 5hat"i" + hat"j" - 2hat"k"` and `bar "c" = hat"i" + hat"j" - hat"k"`, then `[bar"a" bar"b" bar"c"]` = ______.
→
A solution has an osmotic pressure of $'x\ '$ $kPa$ at $300 K$ having $1 \ mole$ of solute in $10.5 m ^3$ of solution. If it's osmotic pressure is reduced to $\left(\frac{1}{10}\right)^{\text {th }}$ of it's initial value, what is the new volume of solution?
→
A body of mass $m$ is performing a $\text{UCM}$ in a circle of radius $r$ with speed $v$. The work done by the centripetal force in moving it through $\left(\frac{2}{3}\right) rd$ of the circular path is
→
If a capillary tube is dipped in water in a state of weightlessness, then water will ______.
→
The maximum and minimum tensions in the string whirling in a circle of radius 2.5 m with constant velocity are in the ratio 5 : 3. Then its velocity is ____________.
→
In which of the following zones root hair occurs?
→
In Primrose, self-pollination is avoided by _______.
→
According to Rutherford's model of an atom, ______
→