
Physics basics
Quiz by Lovro
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- 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?
4λ
λ/4
2λ
λ/2
30s - Q4
What is the speed of light in vacuum?
3 * 1012
3 * 108
3 * 106
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