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Physics

Physics
Radiocarbon dating technique is used to estimate the age of

soil
monuments
rocks
fossils

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Physics
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons?

1.8 km, 0.15 km
2.2 km, 0.20 km
2.8 km, 0.25 km
3.3 km, 0.30 km

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Physics
Radio waves sent out by a radio stations are reflected by

Troposphere
Mesosphere
Stratosphere
Ionosphere

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Physics
A copper disc has a hole. If the disc is heated, the size of the hole

First increases and than decreases
No change
Decreases
Increases

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Physics
Addition of suitable impurities into semiconductor, is called

Mixing
Forming
Diluting
Doping

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Physics
Which colour has the highest frequency?

Green
Indigo
Red
Violet

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MORE MCQ ON Physics

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