Modern Physics

Question 1

Planck’s Constant (h)

Answer 1

6.63×10⁻³⁴Js⁻¹

Question 2

Charge on an electron

Answer 2

-1.6×10⁻¹⁹C

Question 3

Rydberg’s Constant (R)

Answer 3

1.1×10⁷m⁻¹

Question 4

c

Answer 4

3×10⁸

Question 5

c²

Answer 5

9×10¹⁶

Question 6

Material that prevents radioactive emission from passing through it

Answer 6

Absorber

Question 7

Release of alpha particle from unstable nucleus(a 2⁺ helium ion or a helium nucleus)

Answer 7

Alpha emission

Question 8

Spectral lines given out/absorbed by low pressure gases when they are excited

Answer 8

Atomic line spectra

Question 9

The nucleus of a helium atom (two protons and two neutrons) emitted as radiation from a decaying heavy nucleus

Answer 9

Alpha particle

Question 10

Slowest form of radiation

Answer 10

Alpha particle

Question 11

Speed of beta radiation

Answer 11

Near light speed

Question 12

Speed of gamma radiation

Answer 12

Light speed

Question 13

Alpha particle

Answer 13

Helium nucleus

Question 14

Beta radiation

Answer 14

An electron

Question 15

Gamma radiation

Answer 15

Electromagnetic ray (high frequency)

Question 16

Atomic and mass numbers for Alpha radiation

Answer 16

4,2

Question 17

Atomic and mass numbers for Beta radiation

Answer 17

0,-1

Question 18

Atomic and mass numbers for Gamma radiation

Answer 18

0,0

Question 19

Atomic and mass numbers for proton

Answer 19

1,1

Question 20

Atomic and mass numbers for neutron

Answer 20

1,0

Question 21

Conversion for eV & J

Answer 21

1eV = 1.6×10⁻¹⁹J

Question 22

Energy and Wavelength when f increases

Answer 22

Energy increases, Wavelength decreases

Question 23

Energy and Wavelength when f decreases

Answer 23

Energy decreases, Wavelength increases

Question 24

Lyman Series S=

Answer 24

1

Question 25

Balmer Series S=

Answer 25

2

Question 26

Passchen Series S=

Answer 26

3

Question 27

Brackett Series S=

Answer 27

4

Question 28

Pfund Series S=

Answer 28

5

Question 29

Series number 1

Answer 29

Lyman Series

Question 30

Series number 2

Answer 30

Balmer Series

Question 31

Series number 3

Answer 31

Passchen Series

Question 32

Series number 4

Answer 32

Brackett Series

Question 33

Series number 5

Answer 33

Pfund Series

Question 34

Ground state L=

Answer 34

1

Question 35

Excited State 1 L=

Answer 35

2

Question 36

Excited State 2 L=

Answer 36

3

Question 37

Excited State 3 L=

Answer 37

4

Question 38

Short range force that hold nucleons together

Answer 38

Strong Nuclear Force

Question 39

Long range repulsion force between protons

Answer 39

Electrostatic Force

Question 40

Radiation when a nucleus is too large to be stable

Answer 40

Alpha radiation

Question 41

Radiation when a neutron decays

Answer 41

Beta radiation

Question 42

Radiation when a nucleus has excess energy

Answer 42

Gamma radiation

Question 43

Spontaneous fission

Answer 43

Happens due to a nucleus being unstable

Question 44

Induced fission

Answer 44

Caused by an incident particle

Question 45

Name of initial particle in a fission reaction

Answer 45

Parent particle

Question 46

Name of created particles in a fission reaction

Answer 46

Daughter particles

Question 47

Visible light series in Hydrogen atom

Answer 47

Balmer Series

Question 48

Quantised packet of energy

Answer 48

Photon