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Q.1: If n number of the photon is striking on a metal surface then total momentum exerted is——–?
- p
- n
- 0
- None
A
Q.2: A photon of wavelength 900nm behaves like a particle of mass——-?
- 5.53 x 10-36kg
- 0 kg.
- 2.46 x 10-36kg
- 1.84 x 10-44kg
C
Q.3: The velocity of a particle of mass m of de-Broglie wavelength λ is——-?
- v = 3 ×× 106 ms-1
- v = 2 ×× 10 ms-1
- v = 2 ×× 6 ms-1
- v = 2 ×× 106 ms-1
D
Q.4: In Davisson-Germer experiment the diffracted proton from crystal shows——-?
- Particle property
- Wave property
- Light property
- Quantum property
B
Q.5: If a diffraction grating is placed in the path of a light beam it reveals——-?
- Wave property
- Particle property
- Energy particle
- Electromagnetic wave property
A
Q.6: In an electron microscope, we use energetic particles because of——-?
- Penetrating power is high
- Kinetic energy is large
- Wavelength is very short
- All the above reasons
C
Q.7: In the electron microscope, electric And magnetic fields are used as——–?
- Electromagnetic gun
- Source of electromagnetic waves
- Deflecting charged particle
- Converging source of electrons
D
Q.8: A three-dimensional image is obtained by——–?
- Electron microscope
- Scanning electron microscope
- Magnetic imaging
- None of the above
B
Q.9: The uncertainty in momentum And position is due to its——-?
- Property of matter and radiation
- Two-dimensional motion
- Emission of the certain wavelength
- Very high velocity
A
Q.10: For confinement of electron in a box of radius 10-14m the electron, speed should be——-?
- 107m/sec
- greater than the speed of light
- Be zero
- Not be wave-like
B