Physics
For which of the following game, players must have the knowledge of Pascal's law?

Paragliding
Scuba diving
Rafting
Climbing

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Physics
What is a compound microscope?

A microscope whose lenses are concave.
A microscope that has two sets of lenses : an occular lens and an eyepiece.
A microscope whose lenses are convex.
A microscope that has one lens.

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Physics
Mica is used in electrical appliances such as electric iron because mica is

a bad conductor of heat as well as electricity
a good conductor of heat but a bad conductor of electricity
a bad conductor of heat but a good conductor of electricity
a good conductor of heat as well as electricity

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Physics
The bats can fly in the dark because

They generate flashes of light
They generate ultrasonic sound waves
They have weak legs and are likely to be attacked by predators
They can see the objects in darkness

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Physics
In heating frozen foods in sealed pouches in a microwaves, why do you first poke holes in the pouch?

To prevent the steam pressure from bursting open the pouch
To allow the aroma of the food to come out through the holes
To allow the microwaves to get into the food through the holes
To allow the heat to get into the food through the hole

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