Answer:
Wavelength of light and frequency have inverse relationship.
Explanation:
Wavelength of light and frequency have inverse relationship. This is because Wave length is the distance between two successive crests or troughs while frequency is the number of waves passing through a specific point in one second.
It is cleared if the wavelength is larger less numbers of waves will pass through a given point and vice versa.
Answer:
d. The entropy of the system increases, because the disorder caused by the change in state from solid to liquid water causes more disorder than liquid water cooling causes order.
Explanation:
Entropy of a state may be defined as a natural process and spontaneous process. It is the measure of the disorder and randomness of the event.
In the context, when ice cubes are dropped in a cup of hot water which is insulated, the ice melts and the water temperature decreases. According to the principle of entropy increase, option A is wrong as the process in not a reversible process and option B is also wrong as it violates the principle of energy conservation. So option D is correct which shows the disorderness of the system.
The <span>induced emf in the coil is -45V.</span>
Answer:
gravitational potential energy.
Explanation:
Gravitational potential energy (GPE) can be defined as an energy possessed by an object or body due to its position above the earth surface.
Mathematically, gravitational potential energy is given by the formula;
Where,
G.P.E represents gravitational potential energy measured in Joules.
m represents the mass of an object.
g represents acceleration due to gravity measured in meters per seconds square.
h represents the height measured in meters.
This ultimately implies that, anytime there is height, the object must have gravitational potential energy.
Hence, an object possesses gravitational potential energy due to its height (position) and the earth's gravitational force.
