Sources of energy - class-VI
Description: sources of energy | |
Number of Questions: 58 | |
Created by: | |
Tags: mechanics work, energy and power energy transformations and energy transfers evs - i sources of energy world energy needs energy management energy : forms and sources physics evs substances, objects and energy heat and energy work, energy and machines energy and its forms work and energy primary concept of force and energy solar energy types of energy |
The kind of energy present in fossil fuels is :
Coal is a renewable source of energy.
State whether given statement is True or False
In hydroelectric plants, the kinetic energy of flowing water drives the generator.
Coal and petroleum are called fossil fuels.
The fossil fuels include:
A body is falling freely under the action of gravity alone in vacuum. Which of the following quantities remain constant during the fall?
While falling
A body rolling down a hill has
A flying aeroplane has:
A body rolling down a hill has:
Which of the following has both kinetic energy and potential energy ?
Kinetic energy and potential energy are the two forms of
Identify an example of kinetic mechanical energy?
Which of the following type of wave is created by solar energy?
Select the best definition of mechanical energy?
What is the relationship between the kinetic energy($K$), potential energy($P$) and total energy($E$) of a system?
Total energy of body is the sum of:
A body of mass $15\ kg$ is raised from certain depth. If the work done in raising it by $10m$ is $1620J$, its velocity at this position is$(g=10 { ms }^{ -2 })$:
A body of mass 5 kg falls from a height of
30 metre. If its all mechanical energy is changed into heat, then heat produced
will be:-
The conservation principle of mechanical energy requires that
Mechanical Energy is conserved under
A mass of $0.5$ kg is suspended from wire, then lemgth of wire increase by $3$ mm then find out work done:
The work done by all the forces (external and internal) on a system equals the change in
In a hydroelectric power plant ___ energy is converted into ____ energy.
A single conservative force F(x) acts on a $1$ kg particle that moves along the x-axis. The potential energy U(x) is given by $U(x) = 10+(x-1)^2$ Where x is in meters. At x =$2$ m, the particle has a kinetic energy of $8$ Joules. Then the mechanical energy of particle is
If $484J$ of energy is spent in increasing the speed of a wheel from $60rpm$ to $360\ rpm$, the $M.I$ of the wheel is
Which is a non-renewable energy resource?
What is the percentage of ${92} _U^{235} in \,92 _U^{238}$?
How many nuclear power stations does India have at present?
India's uranium supply comes mainly from the Jaduguda mines in.
In India, uranium is found in.
Sound is form of
The vast amount of ses weeds present in oceans may provide an endless source of.
Choose the source of energy which is different from others.
Which of the following substances is smokeless?
Producer gas is a mixture of.
When was India's first critical nuclear reaction carried out?
State whether the given statement is True or False :
What percentage of energy requirement of India is met by nuclear power stations?
Which of the following is not a non-conventional source of energy?
If you could use any source of energy for heating your food, which one would you use?
Which of the following is potentially good source of energy?
Which of the following substances is flammable?
The fuels that cannot be replenished, once they are used are called _______ .
A good fuel should :
What is the term known as 'when there is a great need of energy and we do not have enough amount of the same'?
State whether the given statement is True or False :
From below what is an example of conventional source of energy?
Hotspots are source of _________ energy.
The main component of natural gas is?
Identify from the following, a conventional source of energy :
Wind-energy map gives information about the
The muscular energy required by our body is given to us by :
Which of the following statements about pinhole camera are correct?
(i) It is a camera with a single lens.
(ii) It produces an upside down image of object.
(iii) It does not have a screen.
(iv) It works because light travels in a straight line.
(v) It forms real and colourless shadows of objects.
A good source of energy would be the one which would do a _______ amount of work per unit volume of mass. Any source of energy we use to do work is consumed & _______ used again.
The fuel used in wick stoves to cook food is _____