Speed of aeroplanes
Speed of light
Stellar distances
Speed of rockets
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Answer : Option C
Explanation :
Stellar distances.
White dwarfs
Quartz clocks
Atomic clocks
Pulsars
Atomic clocks.
0.84
0.5
1.6
0.62
Answer : Option D
Power used by a current of one ampere
Electromagnetic radio wave frequencies
Voltage
Electric resistance
Answer : Option B
Electromagnetic radio wave frequencies.
746 watts
748 watts
756 watts
736 watts
Answer : Option A
746 watts.
Temperature
Heat
Atmospheric pressure
Current
Atmospheric pressure.
105 ergs
103 ergs
107 ergs
1011 ergs
107 ergs.
Work
Power
Electricity
Power.
Commutator
Anemometer
Ammeter
Voltmeter
Ammeter.
Colour contrast
Sound waves
Time
Water waves
Time.