- 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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In an electromagnetic wave, the electric and magnetising fields are 100 and
The maximum energy flow is
|
(a) |
(b) |
(c) |
(d) |
Forty electric bulbs are connected in series across a 220 V supply. After one bulb is fused, the remaining 39 are connected again in series across the same supply. The illumination will be
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(a) More with 40 bulbs than with 39 |
(b) More with 39 bulbs than with 40 |
|
(c) Equal in both the cases |
(d) In the ratio of |
Nuclear fission experiments show that the neutrons split the uranium nuclei into two fragments of about same size. This process is accompanied by the emission of several
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(a) Protons and positrons |
(b) a - particles |
|
(c) Neutrons |
(d) Protons and a-particles |
Assertion : The mass of b-particles when they are emitted is higher than the mass of electrons obtained by other means.
Reason : b-particle and electron, both are similar particles.
|
(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
|
(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
|
(c) If assertion is true but reason is false. |
|
(d) If the assertion and reason both are false. |
The current in the following circuit is
|
(a) |
(b) |
(c) |
(d) 1A |