- ABoth inputs are 0.
- BEither input is 1.
- CBoth inputs are 1.
- DEither input is 0.
Explanation:
The truth table for 2-input OR gate is as shown in the figure. Thus, the output is zero only when both inputs are zero.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
The nucleus
after two successive
decays will give
|
(a) |
(b) |
(c) |
(d) |
If an ammeter is to be used in place of a voltmeter then we must connect with the ammeter a
|
(a) Low resistance in parallel |
(b) High resistance in parallel |
|
(c) High resistance in series |
(d) Low resistance in series |
Two bulbs of 500 watt and 200 watt are manufactured to operate on 220 volt line. The ratio of heat produced in 500 W and 200 W, in two cases, when firstly they are joined in parallel and secondly in series, will be
|
(a) |
(b) |
(c) |
(d) |
If the potential of a capacitor having capacity of 6 mF is increased from 10 V to 20 V, then increase in its energy will be
|
(a) 12 × 10–6 J |
(b) 9 × 10–4 J |
(c) 4 × 10–6 J |
(d) 4 × 10–9 J |
In the following transitions, which one has higher frequency
|
(a) 3 – 2 |
(b) 4 – 3 |
(c) 4 – 2 |
(d) 3 – 1 |
Assertion : In the process of photoelectric emission, all the emitted photoelectrons have the same kinetic energy.
Reason : The photon transfers its whole energy to the electron of the atom in photoelectric effect.
|
(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 assertion is false but reason is true. |