INVENTIONS QUIZ

A man jumping out of a moving train is thrown

Sideways

Backward

None of these

Forward

TRUE ANSWER : ?
YOUR ANSWER : ?

Air pressure is measured in which of the following units?

Newton

Kg/mts

Pascal

Steridian

TRUE ANSWER : ?
YOUR ANSWER : ?

A boat loaded with rocks floats in the middle of a swimming pool. A man in the boat throws the rocks overboard. The level of water in the pool will

Remains the same

Increase

Decrease

First decrease and then increase

TRUE ANSWER : ?
YOUR ANSWER : ?

A concave lens always forms

A real image

A virtual image

An image type which depends on object characteristics

An image type which depends on lens curvature

TRUE ANSWER : ?
YOUR ANSWER : ?

The device used for locating submerged objects under sea is.

Radar

Maser

Laser

Sonar

TRUE ANSWER : ?
YOUR ANSWER : ?

Electric Motor converts ________ energy to mechanical energy

Chemical

Mechanical

Sound

Electrical

TRUE ANSWER : ?
YOUR ANSWER : ?

A piece of paper and a cricket ball are dropped from the same height. Under which of the following conditions do both reach the surface simultaneously ?

They must have the same mass

They must be dropped in vacuum

They must have the same volume

They must have the same density

TRUE ANSWER : ?
YOUR ANSWER : ?

Choose the most appropriate answer: In which atmospheric layer are the communication satellites located?

Stratosphere

Troposphere

Ionosphere

Mesosphere

TRUE ANSWER : ?
YOUR ANSWER : ?

Waves that are required for long distance wireless communication are

Ultraviolet rays

Infrared rays

Microwaves

Radio waves

TRUE ANSWER : ?
YOUR ANSWER : ?

Magnetism in materials is due to

Electrons at rest

Protons at rest

All neutrons at rest

Circular motion of electrons

TRUE ANSWER : ?
YOUR ANSWER : ?

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