Tag: renewable and non-renewable resources

Questions Related to renewable and non-renewable resources

In order to absorb more heat, the outer surface of copper tube of solar water heater is coloured with :

physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

  1. Red

  2. Yellow

  3. Black

  4. Green

Show answer
Correct Option: C
Explanation:

Among all colour black is the best absorber for heat  so outer surface of copper tube is coloured with black.

Two identical immersion heaters are to be used to heat water, in a large container. Which one of the following arrangement would heat the water faster :
Give reasons for your answer.

physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

  1. Connecting the heaters in series with the main supply,

  2. Connecting the heaters in parallel with the main supply,

  3. Connecting the heaters in series and parallel with the main supply,

  4. None of the above

Show answer
Correct Option: A

Which of the following is used in solar cooker to harvest the solar energy?

physics solar equipment production of electricity from solar energy solar power alternate sources of energy solar power plant solar energy and its applications renewable and non-renewable resources renewable and non-renewable sources of energy generation of electricity

  1. Solar panels

  2. Silicon cell

  3. Mirrors

  4. Glass lid

Show answer
Correct Option: B

In geothermal plants steam is raised by pumping water upto the layer of magma.                           .......................

physics energy : forms and sources production of electricity from solar energy solar equipment solar power renewable and non-renewable resources renewable and non-renewable sources of energy

  1. True

  2. False

  3. Ambiguous

  4. Data insufficient

Show answer
Correct Option: A
Explanation:

The most common way of capturing the energy from geothermal sources is to tap into naturally occurring 'hydrothermal convection' systems, where cooler water seeps into Earth's crust, is heated up, and then rises to the surface. Once this heated water is forced to the surface, it is a relatively simple matter to capture that steam and use it to drive electric generators. Geothermal power plants drill their own holes into the rock to more effectively capture the steam.
Hence, the statement is true.

A mercury drop of water has potential 'V' on its surface. $1000$ such drops combine to form a new drop. Find the potential on the surface of the new drop.

physics energy : forms and sources renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

  1. V

  2. $10$V

  3. $100$V

  4. $1000$V

Show answer
Correct Option: C
Explanation:

Potential of single smaller Hg drop of water =$\dfrac{Kq}{r}$=V-----(1)

and we know potential of n smaller Hg drop of water $=\dfrac{Knq}{R}$------(2)
Volume of 1000 small drops = volume of larger drop
$1000\dfrac{4}{3}\pi {r}^{3}=\dfrac{4}{3}\pi {R}^{3}$
Thus radius of bigger droplet $R=10r$
 Now putting the value of R in equation 2 we get
Potential of larger drop$=\dfrac{1000Kq}{10r}$=$100V$  

There will be an increase in potential energy of the system if work is done upon the system by

physics types of energy renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

  1. any conservative or non-conservative forces

  2. a non-conservative force

  3. conservative force

  4. None of the these

Show answer
Correct Option: C
Explanation:

Since potential energy defined only for conservative force. It will increase for conservative force.

Potential energy of a body depends on its:

physics types of energy renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

  1. motion

  2. colour

  3. mass

  4. none of these

Show answer
Correct Option: C
Explanation:

We know that potential energy is the energy possesd by the virtue of its position.
So, $F = mgh $
Where, $ m = $ mass
So, From above equation we can deduce that potential energy depends on the mass of the substance.

Energy possessed by a body by virtue of its position at a height is :

physics types of energy renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

  1. Kinetic energy

  2. Chemical energy

  3. Potential energy

  4. Magnetic energy

Show answer
Correct Option: C
Explanation:

Potential energy of a body is defined as energy possessed by a body by  virtue of its position at a height.
$ P.E = mgh$

The principle behind the working of an atom bomb is:

chemistry energy : forms and sources renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

  1. Nuclear fussion

  2. Nuclear fission

  3. Radioactivity

  4. None of these

Show answer
Correct Option: B
Explanation:

Nuclear fission

 The atom bomb , also known as atomic bomb or fission bomb is an explosive device  that derives its destructive force from the fission of heavy elements. Typical fuel for the fission reaction within the bomb is either uranium or plutarium.

The energy released by the Hiroshima bomb was originally thought to be equivalent to the destructive power of approximately 

chemistry energy : forms and sources renewable and non-renewable resources renewable and non-renewable sources of energy production of electricity from solar energy

  1. 2000 tons of TNT

  2. 20000 tons of TNT

  3. 200000 tons of TNT

  4. 2000000 tons of TNT

Show answer
Correct Option: B
Explanation:

Blast yard of little bys is equivalent to 15 kilotons(15000 tons)  of TNT.