Physics MCQs

852 MCQs  (Page 65 of 86)

Attempt Physics Quiz
Photoelectric effect was given by ____________________?
A. Hertz
B. Fresnel
C. Einstein
D. Plank
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Longitudinal waves do not exhibit _____________________?
A. Reflection
B. Refraction
C. Diffraction
D. Polarization
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Which one is the best material for making connecting wires ?
A. Iron
B. Tungsten
C. Silver
D. Copper
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Internal resistance is the resistance offered by________________?
A. Source of emf
B. Conductor
C. Resistor
D. Capacitor
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Three bulbs are rating 40W 60W and 100W designed to work on 220V mains. Which bulb will burn most brightly if they are connected in series across 220 V mains ?
A. 40 w bulb
B. 60 w blub
C. 100 w blub
D. All will burn equally brightly
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Resistance of a wire on increasing its temperature will_________________?
A. Increase with rise in temperature
B. Decrease with rise in temperature
C. Will remain same
D. Depends upon altitude of experimentation
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An electric iron is marked 20 volts 500W. The units consumed by it in using if for 24 hours will be______________?
A. 12
B. 24
C. 5
D. 1100
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In liquids and gases the current is due to the motion________________?
A. Negative charges
B. Positive charges
C. Both negative and positive charges
D. Neutral particles
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The graphical representation of Ohms law is___________________?
A. Hyperbola
B. Ellipse
C. Parabola
D. Straight line
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The resistance of a conductor at absolute zero (OK) is________________?
A. Zero almost
B. Infinite almost
C. No prediction at all
D. May increase or decrease
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Word of the Day
23 Jul
Aisle
a passage between rows of seats in a building such as a church or theatre, an aircraft, or train.
طویل تنگ راستہ، نشتوں کے درمیان راستہ

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