Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 54

MEDIUM

NEET

IMPORTANT

Earn 100

What is the maximum kinetic energy of photoelectron from a photon of wavelength $2000 \overset{\circ}{A}$ of $Cu$ metal (work function of $Cu$ is $4.8 eV$ )?

69.05% studentsanswered this correctly

Important Questions on Structure of Atom

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 55

When the frequency of light incident on a metallic plate is doubled, the maximum

KE

of the emitted photoelectrons is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 56

The number of photoelectrons emitted depends upon

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 57

The expression for Bohr's radius of an atom is

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 58

The ratio of radii of the second and first Bohr's orbits of

H -

atom is

MEDIUM

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 59

The ratio of radii of the second orbits of

{He}^{+}, {Li}^{2 +}

and

{Be}^{3 +}

is

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 60

If

r

is the radius of the first orbit, the radius of

n^{th}

orbit of

H -

atom is given by

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 61

If the speed of an electron in the second orbit of

{He}^{+}

is

" v ",

then the speed of an electron in the first Bohr's orbit of hydrogen atom will be

EASY

NEET

IMPORTANT

Alpha Question Bank for Medical: Chemistry>Chapter 2 - Structure of Atom>Exercise 1>Q 62

What is the ratio of speeds of electrons in

1^{st}

orbit of

H -

atom to

5^{th}

orbit of

{He}^{+}

ion?