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Is there any difference between echo and reflection of sound? Explain.

asked Oct 17, 2017 in Physics by sonia (36.5k points)

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What do you understand by analogue and digital quantities?

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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What do you mean by conventional current? Explain.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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What is the difference between conductors and insulators?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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Define electronics.

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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Is the presence of charge necessary for the existence of electrostatic potential?

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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1 answer 202 views

How would you define potential difference between two points? Define its unit.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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1 answer 162 views

Define the term time period and frequency.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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1 answer 379 views

Define the terms resolving power and magnifying power or angular magnification.

asked Oct 18, 2017 in Physics by shamroz (41.5k points)

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1 answer 165 views

What is meant by potential difference and electromotive force (emf)?

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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1 answer 159 views

How is energy dissipated in a resistance? Explain.

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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1 answer 104 views

What do you mean by binary variables?

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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1 answer 152 views

How does short circuit occur and how can it be avoided?< .

asked Oct 23, 2017 in Physics by sonia (36.5k points)

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What do you understand by thermionic emission?

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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What is a NOT operation? Write down its truth table.

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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1 answer 101 views

What is the function of electromagnetism in television?

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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1 answer 98 views

What is NOR gate? Give its symbol and truth table.

asked Oct 25, 2017 in Physics by sonia (36.5k points)

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1 answer 145 views

In order to measure current in a circuit, why ammeter is always connected in series?

asked Oct 23, 2017 in Physics by shamroz (41.5k points)

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What is an AND operation? Write down its truth table.

asked Oct 25, 2017 in Physics by shamroz (41.5k points)

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Under what conditions will a converging lens form a virtual image?

asked Oct 19, 2017 in Physics by shamroz (41.5k points)

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