- AKinetic energy of electron < kinetic energy of proton
- BKinetic energy of electron = kinetic energy of proton
- CMomentum of electron = momentum of proton
- DMomentum of electron < momentum of proton
Explanation:
If proton and electron have same debroglie wavelength then momentum of electron is equals to momentum of proton.
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The curve between the activity A of a radioactive sample and the number of active atoms N is
|
(a) |
(b) |
(c) |
(d) |
A rectangular tank of depth 8 meter is full of water (μ = 4/3), the bottom is seen at the depth
|
(a) 6 m |
(b) 8/3 m |
(c) 8 cm |
(d) 10 cm |
A toroid has number of turns per unit length n, current i, then the magnetic field is
|
(a) |
(b) |
(c) |
(d) None of these |
Lenz's law gives
|
(a) The magnitude of the induced e.m.f. |
|
(b) The direction of the induced current |
|
(c) Both the magnitude and direction of the induced current |
|
(d) The magnitude of the induced current |
Half-life of a substance is 10 years. In what time, it becomes
th part of the initial amount
|
(a) 5 years |
(b) 10 years |
(c) 20 years |
(d) None of these |
