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Physics basics

Quiz by Lovro

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20 questions
Show answers
  • Q1

    What is the value of Plancks constante?

    6.626 * 10-34  Js 

    6.626 * 10-24  Js 

    9.1 * 10-31  Js 

    1.6 * 10-19  Js 

    30s
  • Q2

    How many laws of geometric optic are there?

    6

    3

    4

    5

    30s
  • Q3

    An electron moving with speed v has the de Broglie wavelength λ.What is the de Broglie wavelength of an electron moving at speed v/4?

    λ/4

    λ/2

    30s
  • Q4

    What is the speed of light in vacuum?

    3 * 1012

    3 * 108

    3 * 10

    3 * 1010

    30s
  • Q5

    What is the primary force that keeps protons and neutrons inside nucleus?

    Nuclear force

    Magnetic force

    Gravitational force

    Electric force

    30s
  • Q6

    Which of the following particles has a negative electric charge?

    neutron

    positron

    proton

    electron

    30s
  • Q7

    What is the unit of electric current?

    Ohm

    Volt

    Columb

    Ampere

    30s
  • Q8

    Photon of energy 8 eV causes a photoeffekt on a metal whose output work is 3 eV. What will be the maximum kinetic energy of an electron ejected from that metal?

    11 eV

    5 eV

    3 eV

    24 eV

    30s
  • Q9

    We express the binding energy in: 

    eV

    MeV

    V

    GeV

    30s
  • Q10

    Which electromagnetic wave has the longest wavelength?

    visible light

    gamma-wave

    Radio-wave

    UV-wave

    30s
  • Q11

    What is refractive index of air?

    1.2

    1

    2.56

    4/3

    30s
  • Q12

    What is the gravitational acceleration of earth?

    8.9 m/s2

    none

    9.8 m/s

    10.5 m/s2

    30s
  • Q13

    What type of wave is a sound wave?

    longitudinal

    electromagnetic

    transverse

    surface

    30s
  • Q14

    What is a photon particle of:

    sound

    charge

    light

    water

    30s
  • Q15

    Which physical quantity is measured in Ohms?

    Capacitance

    Resistance

    Conductance

    Inductance

    30s

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