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Q:

What is unit of Viscosity ?

 A) coulomb B) newton second per square meter C) watt per meter per degree celcius D) joule per kilogram per Kelvin

Answer:   B) newton second per square meter

Explanation:

coulomb is unit of Electric Charge,

watt per meter per degree celcius is unit of Thermal Conductivity,

joule per kilogram per Kelvin is unit of Specific Heat capacity.

Subject: Physics
Q:

Which liquid is the most viscous?

 A) Water B) Diesel C) Milk D) Oil

Answer & Explanation Answer: D) Oil

Explanation:

Here Oil is the most viscous liquid.

The liquid with the most intermolecular force is high viscous. viscosity is how smoothly a liquid flows and how hardly the liquid flows it is highly viscous.

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Q:

Nuclear Fission is caused by the impact of

 A) Electron B) Neutron C) Proton D) Deutron

Answer & Explanation Answer: B) Neutron

Explanation:

In nuclear physics, nuclear fission is either a nuclear reaction or a radioactive decay process in which the nucleus of an atom splits into smaller parts (lighter nuclei). The fission process often produces free neutrons and releases a very large amount of energy.

Thus, The Nuclear Fission is caused by the impact of Neutrons.

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Q:

Which of the following uses a Non Renewable Energy Source?

 A) Wind Mill Power Plant B) Hydro Electric Plant C) Nuclear Power Plant D) Tidal Power Plant

Answer & Explanation Answer: C) Nuclear Power Plant

Explanation:

Nuclear Power Plant uses a Non Renewable Energy Source.

Non-renewable energy is that source of energy which can not be used again and again. This sort of energy is sustainable to exhaustion.

Non renewable energy is that form of energy which is subject to deletion. This type of energy is of many uses to us. It can be used to produce electricity, heating, cooking, transportation and manufacturing. 85% of the energy used in the industrial processes is form the non-renewable type of energy.

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Q:

Which Color has the Longest Wavelength?

 A) Violet B) Yellow C) Red D) White

Answer & Explanation Answer: C) Red

Explanation:

The visible colors from Longest wavelength to Shortest wavelength are :: Red, Orange, Yellow, Green, Blue and Violet.

Red > Orange > Yellow > Green > Blue > Violet.

1. Infrared radiation has a longer wavelength than visible Red light.

2. Ultraviolet radiation has a shorter wavelength than the visible violet light.

3. The white light is a mixture of the colors of the visible spectrum.

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3 98
Q:

Which of the following is Not a form of Energy?

 A) Heat B) Sound C) Motion D) Pressure

Answer & Explanation Answer: D) Pressure

Explanation:

Pressure is Not a form of Energy.

Energy : It is defined as the ability to do work.

Energy comes in two basic forms. They are :

1. Potential Energy

2. Kinetic Energy

Potential Energy is any type of stored energy. It can be chemical, nuclear, gravitational, or mechanical.

Kinetic Energy is found in movement. An airplane flying or a meteor plummeting each have kinetic energy. Even the tiniest things have kinetic energy, like atoms vibrating when they are hot or when they transmit sound waves. Electricity is the kinetic energy of flowing electrons between atoms.

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3 83
Q:

How long would it take to travel 4 light years?

Answer

There are approximately 6 trillion miles in a light-year, so the distance we need to go is 6 trillion miles / light-year times. 4 light-years is equal to 24 trillion miles. So, this whole would take 1.2 billion hours. There are 24 hours a day and 365.25 days per year, so this time in years is 137 thousand years.

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79
Q:

The Length of the Day is determined in

 A) length of the hours B) length of the year C) astronomical units D) solar terms

Answer & Explanation Answer: C) astronomical units

Explanation:

The Length of the Day is determined in Astronomical Units.

The length of a day corresponds to the time the Earth takes to turn around on its axis, which is approximately 24 hours. But it's not exactly 24 hours.

This phenomenon is due to tides raised by the Moon which slow Earth's rotation. Because of the way the second is defined, the mean length of a day is now about 86 400.002 seconds, and is increasing by about 1.7 milliseconds per century.

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3 84
Q:

The Capacity of a Communication Channel is Measured in

 A) Band rate B) Band width C) Data flow D) Bit capacity

Answer & Explanation Answer: B) Band width

Explanation:

The path that data takes from source to destination is called a Channel. A channel is a communication medium. A channel has a certain capacity for transmitting information.

The "capacity" of a channel is the theoretical upper-limit to the bit rate over a given channel that will result in negligible errors. Channel capacity is often measured by its Bandwidth in Hz or its data rate in bits per second.

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