Which gates is represented by this figure

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(a) NAND gate |
(b) AND gate |
(c) NOT gate |
(d) OR gate |
Which gates is represented by this figure

|
(a) NAND gate |
(b) AND gate |
(c) NOT gate |
(d) OR gate |
(a) NAND gate
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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. |
When a bar magnet falls through a long hollow metal cylinder fixed with its axis vertical, the final acceleration of the magnet is
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(a) Equal to zero |
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(b) Less than g |
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(c) Equal to g |
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(d) Equal to g in to beginning and then more than g |
Which of the following is true for number of spectral lines in going form Layman series to Pfund series
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(a) Increases |
(b) Decreases |
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(c) Unchanged |
(d) May decreases or increases |
What is the area of the plates of a 3F parallel plate capacitor, if the separation between the plates is 5mm
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(a) 1.694 |
(b) 4.529 |
(c) 9.281 |
(d) 12.981 |
An electron is moving with a speed of perpendicular to a uniform magnetic field of intensity B. Suddenly intensity of the magnetic field is reduced to B/2. The radius of the path becomes from the original value of r
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(a) No change |
(b) Reduces to r / 2 |
(c) Increases to 2r |
(d) Stops moving |