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Physics

Physics
Period of oscillation of 3 cm microwaves in seconds is

0.01
0.001
1 × 10–10
1 × 1010

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Physics
The working of the quartz crystal in the watch is based on the

Piezo - electric Effect
Photoelectric Effect
Edison Effect
Johnson Effect

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Physics
Which of the following is an example for cantilever beam?

Common balance
See-saw
Diving board
Bridge

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Physics
What is the process of conversion of solid state directly to gaseous state called?

Sublimation
Condensation
Evaporation
Distillation

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Physics
What is unit of Viscosity ?

Joule per kilogram per Kelvin
Watt per meter per degree celcius
Newton second per square meter
Coulomb

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Physics
A copper wire of radius r and length l has a resistance of R. A second copper wire with radius 2r and length l is taken and the two wires are joined in a parallel combination. The resultant resistance of the parallel combination of the two wires will be

4 R/5
5 R
R/5
5 R/4

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