A. v = 3 ×× 106 ms-1
B. v = 2 ×× 10 ms-1
C. v = 2 ×× 6 ms-1
D. v = 2 ×× 106 ms-1
Related Mcqs:
- A photon of wavelength 900nm behaves like a particle of mass______________?
A. 5.53 x 10-36kg
B. 0 kg.
C. 2.46 x 10-36kg
D. 1.84 x 10-44kg - When a particle of charge q and mass m enters into a uniform magnetic field B moving with a velocity v perpendicular to the direction for the field it describes a circular path of radius___________________?
A. R=qB/mV
B. R=mV/qB
C. R=qmV/B
D. R=qmB/V - The penetration power of alpha particle as compared to beta particle is_______________?
A. 10 times more
B. 100 times more
C. 100 times less
D. 10 times less - A particle of mass m charge q and speed V enters a uniform magnetic radius r. The radius r of the circle is_________________?
A. independent mass m
B. directly proportional to m
C. directly proportional to q
D. directly proportional to B - A particle having the mass of an electron and the charge of a proton is called a______________?
A. Antiproton
B. Positron
C. Gamma rays
D. Photon - An alpha particle is emitted from 88Ra226. What is the mass and atomic number of the daughter nucleus ?
A. 224 – 84
B. 220 – 80
C. 222 – 86
D. 226 – 87 - The charged particle enters the uniform magnetic field in such a way that its initial velocity is not perpendicular to the field the orbit will be__________________?
A. a circle
B. a spiral
C. an ellipse
D. helix - In S.H.M. the velocity of a particle is maximum at________________?
A. mean position
B. extreme position
C. middle between the mean and extreme position on the right side
D. middle between the mean and extreme position on the left side - The linear momentum of an X-ray photon of wavelength 0.1A is_______________?
A. 6.625x1023N-s
B. 66.25x1023N-s
C. 662.5x1023N-s
D. data is insufficient - A transmitting station emits radio waves of wavelength λ at power P. If h is Planck’s constant & c the speed of light what is the rate of emission of photons ?
A. λ
B. Speed of sound
C. Speed of lightB.
D. h
