Download App

MHT-CET PCB 08 — MHT - CET STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceMHT - CETMHT-CET PCB 081 Mark
MCQ
When an electron in a hydrogen atom jumps from the third orbit to the second orbit, it emits a photon of wavelength 'λ'. When it jumps from the fourth orbit to third orbit, the wavelength emitted by the photon will be ______.
  • ✓
    `20/7lambda`
  • B
    `20/13lambda`
  • C
    `9/16lambda`
  • D
    `16/25lambda`
✓

Answer

Correct option: A.
`20/7lambda`
A

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 PCB 08→MHT-CET PCB 08 — 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 random variable X has the following has the following:

X = x –2 –1 0 1 2 3 4
P(X = x) 6k 8k 5k 4k 6k 11k 7k

Then, the value of P(–1 < X < 3) is ______.

→
Match the following and choose the correct option.
Column I Column II
i. Hyperthyroidism a. Goitre
ii. Hyposecretion of glucocorticoids b. Addison's disease
iii. Hypothyroidism c. Graves' disease
→
If the equation kxy + 5x + 3y + 2 = 0 represents a pair of lines, then k = ____________.
→
The standard heats of formation in $kcal mol ^{-1}$ of $NO _{2(g)}$ and $N _2 O _{4(g)}$ are 8.0 and 2.0 respectively. The heat of dimerization of $NO _2$ in kcal is ____________.$\ce{2NO2_{(g)} ⇌ N2O4_{(g)}}$
→
Two particles of equal mass go around a circle of radius R under the action of their mutual gravitational force of attraction. The speed of each particle is (M = mass of the particle) ____________.
→
$\left[1+\frac{1}{\left(\frac{ dy }{ dx }\right)^2}\right]^{\frac{5}{3}}=5 \frac{ d ^2 y}{ dx ^2}$ are respectively.
→
Which are the pioneer species in xerarch and hydrarch succession respectively?
→
If the line $r=(\hat{i}-2 \hat{j}+3 \widehat{k})+\lambda(2 \hat{i}+\hat{j}+2 \widehat{k})$ is parallel to the plane $r \cdot(3 \hat{i}-2 \hat{j}+m \hat{k})=10$, then the value of $m$ is
→
HCI reduces the pH of stomach resulting in digestion of proteins by ____________.
→
`lim_{x→-5} (sin^-1(x + 5))/(x^2 + 5x)` is equal to ______
→