What happens to the fringe pattern when the Young’s double slit experiment is performed in water instead or air then fringe width
|
(a) Shrinks |
(b) Disappear |
(c) Unchanged |
(d) Enlarged |
(a) Shrinks
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Consider an extended object immersed in water contained in a plane trough. When seen from close to the edge of the trough the object looks distorted because:
The magnitude of electric field E in the annular region of a charged cylindrical capacitor
|
(a) Is same throughout |
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(b) Is higher near the outer cylinder than near the inner cylinder |
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(c) Varies as 1/r, where r is the distance from the axis |
|
(d) Varies as |
A charge moving with velocity v in X-direction is subjected to a field of magnetic induction in the negative X-direction. As a result, the charge will
|
(a) Remain unaffected |
|
(b) Start moving in a circular path Y-Z plane |
|
(c) Retard along X-axis |
|
(d) Move along a helical path around X-axis |
Assertion : The ionising power of b-particle is less compared to a-particles but their penetrating power is more.
Reason : The mass of b-particle is less than the mass of 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. |
The value of angle of dip is zero at the magnetic equator because on it
|
(a) V and H are equal |
(b) The value of V and H is zero |
|
(c) The value of V is zero |
(d) The value of H is zero |
By a cell a current of 0.9 A flows through 2 ohm resistor and 0.3 A through 7 ohm resistor. The internal resistance of the cell is
|
(a) 0.5 Ω |
(b) 1.0 Ω |
(c) 1.2 Ω |
(d) 2.0 Ω |
Young's experiment establishes that
|
(a) Light consists of waves |
|
(b) Light consists of particles |
|
(c) Light consists of neither particles nor waves |
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(d) Light consists of both particles and waves |
Which of the following has the mass closest in value to that of the positron (1 a.m.u = 931 Mev)
|
(a) Proton |
(b) Electron |
(c) Photon |
(d) Neutrino |
