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waec-physics-2020

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48 questions

The volume of a fixed mass of a gas varies inveresely as the...

The volume of a fixed mass of a gas varies inveresely as the pressure on it, provided the temperature is constant. The statement is A. Pressure law

5 months ago • 1 answer(s) • 3 votes

The diagram above illustrates a ball of mass m sliding dow...

5 months ago • 3 answer(s) • 3 votes

The diagram above illustrates a ball of mass m sliding dow...

5 months ago • 1 answer(s) • 3 votes

Two identical cups containing the same volume of water at 45...

Two identical cups containing the same volume of water at 45°C and 5°C, are left in a room at 25°C. Which of the following graphs co...

5 months ago • 2 answer(s) • 2 votes

The diagram above illustrates a beam of parallel rays from...

5 months ago • 1 answer(s) • 3 votes

When two cells of negligible internal resistances are equal ...

When two cells of negligible internal resistances are equal e.m.f. denoted by E1 and E2 are connected in parallel, the combined e.m.f. ...

5 months ago • 1 answer(s) • 5 votes

In photoelectric effect, the number of electrons emitted per...

In photoelectric effect, the number of electrons emitted per second from a metallic surface is proportional to the A. intensity of the incident radia...

5 months ago • 1 answer(s) • 2 votes

The vacuum between the double walls of a thermos flask reduc...

The vacuum between the double walls of a thermos flask reduces heat loss through A. conduction and radiation B. convection and conduction...

5 months ago • 1 answer(s) • 2 votes

Which of the following units is not fundamental? A. Metre ...

Which of the following units is not fundamental? A. Metre B. Kilogram C. Joule D. Candela

5 months ago • 2 answer(s) • 3 votes

A luminous object is one that A. gives off dim blue-green l...

A luminous object is one that A. gives off dim blue-green light only in the dark B. gives out light of its own C. shines by reflected...

5 months ago • 1 answer(s) • 2 votes

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