- APositron
- Bm-Meson
- CK-Meson
- D$\pi$- Meson
Explanation:
The nuclear force between a neutron and proton is the result of the exchange of charged mesons ($\pi^+\pi^-$) between them.
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A cylindrical rod magnet has a length of 5 cm and a diameter of 1 cm. It has a uniform magnetisation of 5.30 × 103Amp/m3. What its magnetic dipole moment
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(a) 1 |
(b) 2.08 |
(c) 3.08 |
(d) 1.52 |
A polaroid is placed at 45o to an incoming light of intensity . Now the intensity of light passing through polaroid after polarisation would be
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(a) |
(b) |
(c) |
(d) Zero |
In the given current distribution what is the value of I
|
(a) 3A |
(b) 8 A |
(c) 2A |
(d) 5A |
An object has image thrice of its original size when kept at 8 cm and 16 cm from a convex lens. Focal length of the lens is
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(a) 8 cm |
(b) 16 cm |
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(c) Between 8 cm and 16 cm |
(d) Less than 8 cm |
Assertion : The energy (E) and momentum (p) of a photon are related by p = E/c.
Reason : The photon behaves like a particle.
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(a) If both assertion and reason are true and the reason is the correct explanation of the assertion. |
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(b) If both assertion and reason are true but reason is not the correct explanation of the assertion. |
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(c) If assertion is true but reason is false. |
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(d) If the assertion and reason both are false. |
Two parallel wires in free space are 10 cm apart and each carries a current of 10 A in the same direction. The force one wire exerts on the other per metre of length is
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(a) 2 |
(b) 2 |
|
(c) 2 |
(d) 2 |