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Physics

Physics
Hot springs are heated geothermally by underlying

Mitula
None of these
Magma
Water

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Physics
A mass of 20 kg is at a height of 8 m above the ground. Then the potential energy possessed by the body is: [Given g = 9.8 m/s2]

1568 W
1568 J
1568 N
1568 C

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Physics
Mud houses are cooler in summers and warmer in winters as compared to brick houses because

Mud is a bad conductor
Mud is a good conductor
Mud is a poor insulator
Evaporation of water causes cooling in summers and sunlight coming through holes causes warming in winters

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Physics
The density of water is 1 g/cc. This is strictly valid at

25°C
100°C
4°C
0°C

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Physics
Ohm's law is valid in case of

Insulator
Superconductor
Semiconductor
Conductor

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Physics
The focal length of a concave mirror with a radius of curvature of 20.0 cm is :

10 cm
5 cm
15 cm
20 cm

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