﻿ The first emission line in the atomic spectrum in the Ballmer series appears at: : Kaysons Education

# The First Emission Line In The Atomic Spectrum In The Ballmer Series Appears At:

#### Video lectures

Access over 500+ hours of video lectures 24*7, covering complete syllabus for JEE preparation.

#### Online Support

Practice over 30000+ questions starting from basic level to JEE advance level.

#### National Mock Tests

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

#### Organized Learning

Proper planning to complete syllabus is the key to get a decent rank in JEE.

#### Test Series/Daily assignments

Give tests to analyze your progress and evaluate where you stand in terms of your JEE preparation.

## Question

### Solution

Correct option is

1st line appears for jump n = 3 to n = 2 for which

#### SIMILAR QUESTIONS

Q1

If photoelectrons are to be emitted from a potassium surface with a speedof , what frequency of radiation must be used? The threshold frequency for potassium is

Q2

A sheet of silver is illuminated by monochromatic ultraviolet radiation of wavelength 1810 Å. What is the maximum energy of the emitted electrons? The threshold wavelength for silver is 2640 Å.

Q3

The work function for the surface of aluminium is 4.2 eV. How much potential difference will be required to stop the emission of maximum-energy electrons emitted by light of 2000 Å wavelength?

Q4

What will be the wavelength of that incident light for which the stopping potential will be zero?

Q5

The threshold frequency for a metal is . Light of frequency  falls on the metal. What will be the cut-off voltage for photoelectric emission.

Q6

The work function of caesium is 2.14 eV. Find the threshold frequency for caesium.

Q7

In an experiment on photoelectric emission, following observations were made wavelength of the incident light

Q8

Light of wavelength 2000 Å falls on aluminium surface (work function of aluminium is .2 eV). Calculate cut-off wavelength for aluminium. Take,

.

Q9

Monochromatic radiation of wavelength 640.2 nm (1 nm = 10–9m) from a neon lamp irradiates a photosensitive material made of cesium or tungsten. The stopping voltage is measured to be 0.54 V. The neon surface is replaced by an iron source whose 427.2 nm line irradiates the material. Predict the new stopping voltage.

Q10

A 200g rickets ball is thrown with a speed of 3 cm/sec. what will be its de Broglie Wavelength