A. v = 3 ×× 106 ms-1
B. v = 2 ×× 10 ms-1
C. v = 2 ×× 6 ms-1
D. v = 2 ×× 106 ms-1
The velocity of a particle of mass m of de-Broglie wavelength λ is______________? Read More »
Modern Physics, Physics Mcqs A. 5.53 x 10-36kg
B. 0 kg.
C. 2.46 x 10-36kg
D. 1.84 x 10-44kg
A photon of wavelength 900nm behaves like a particle of mass______________? Read More »
Modern Physics, Physics Mcqs A. p
B. n
C. 0
D. None
A. Zero
B. Double
C. Half
D. 1
A. The maximum kinetic energy of the photoelectrons increases
B. The minimum kinetic energy of the photoelectrons decreases
C. The minimum kinetic energy of the photoelectrons increases
D. The average kinetic energy of the photoelectrons decreases
A. Becomes double
B. Remains same
C. Becomes half
D. First increases then decrease because of the curvilinear graph
A. Increases because wavelength decreases
B. Decreases because speed decreases
C. Remains same
D. Increases then decrease
A. λ
B. Speed of sound
C. Speed of lightB.
D. h
A. 103 photons of wavelength 2 pm (γ-rays)
B. 102 photons of wavelength 1nm (x-rays)
C. 106 photons of wavelength 50?m (infrared)
D. 106 photons of wavelength 200nm (UV)
Which one of the following has the largest energy content ? Read More »
Modern Physics, Physics Mcqs A. A unit of energy
B. A positively charged particle
C. A quantum of electromagnetic radiation
D. A unit of wavelength
A photon is________________? Read More »
Modern Physics, Physics Mcqs