Physics Questions

Q:

What factors contribute to global winds?

A) Coriolis Effect B) Convection Cells
C) Uneven warming of the earth by the sun D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

All of the factors that contribute to global winds are 

1) Uneven warming of the earth by the sun
2) Coriolis Effect
3) Convection Cells

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Q:

Instrument for measuring time is called _____ .

A) Diagometer B) Anemometer
C) Durometer D) Chronometer
 
Answer & Explanation Answer: D) Chronometer

Explanation:
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Q:

In beta decay what is emitted

A) electron B) proton
C) neutron D) All of the above
 
Answer & Explanation Answer: A) electron

Explanation:
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2 1833
Q:

Magnetism in materials is due to

A) Displacement of electrons B) Circular motion of electrons
C) Charges of neutrons D) All of the above
 
Answer & Explanation Answer: B) Circular motion of electrons

Explanation:

Magnetism in materials is due to circular motion of electrons.

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4 1830
Q:

Which microscope is often used to view metal surfaces?

A) Optical microscopes B) Scanning tunneling microscopes
C) Electron microscopes D) None of the above
 
Answer & Explanation Answer: B) Scanning tunneling microscopes

Explanation:

Microscopes are of three types. They are :

 

1) Optical microscopes

 

2) Electron microscopes

 

3) Scanning tunneling microscopes

 

 Which_microscope_is_often_used_to_view_metal_surfaces1538720175.png image

 

Scanning tunneling microscopes are the microscopes that are used to view metal surfaces.

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0 1828
Q:

The characteristic of ____ is used in the breaking pads of cars.

A) negative effect of friction B) zero effect of friction
C) weight impulse force tension action D) positive effect of friction
 
Answer & Explanation Answer: D) positive effect of friction

Explanation:
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2 1825
Q:

Gamma rays are emanations that have

A) charge but no mass B) neither mass nor charge
C) both mass and charge D) mass but no charge
 
Answer & Explanation Answer: B) neither mass nor charge

Explanation:

A gamma ray or gamma radiation, is a penetrating electromagnetic radiation arising from the radioactive decay of atomic nuclei. It consists of the shortest wavelength electromagnetic waves and so imparts the highest photon energy.

Gamma rays are emanations that have neither mass nor charge.

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4 1813
Q:

Which of these liquids has the highest viscosity?

A) Milk B) Syrup
C) Pineapple juice D) Water
 
Answer & Explanation Answer: B) Syrup

Explanation:

The viscosity of a fluid is a measure of its resistance to deformation at a given rate. For liquids, it corresponds to the informal concept of "thickness".

Here in the given options, syrup has the highest viscosity.

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3 1809