Explanation:
o has Celsius of indirect measurment
Answer: Option (a) is the correct answer.
Explanation:
Sunspots are defined as the dark and cooler areas on the surface of the Earth. A sunspot is present in a region known as photosphere.
Temperature of a sunspot is about 3,800 degrees Kelvin whereas photosphere has a temperature of about 5,800 degree kelvin.
Thus, we can conclude that out of the given options, the statement they are areas of the sun that are "burnt out" is false about sunspots.
Given that,
Output power = 87 W
Decibel reading = 120 dB
We need to calculate the intensity of sound
Using formula of intensity of sound

Put the value into the formula





We need to calculate the distance
Using relation of power out[ut and intensity

Put the value into the formula



Hence, The distance is 2.63 m
Please find the figure attached below:
Answer:
a.Resistance of bulb=
=192 ohm
b.power consumed by bulb after motor disconnection=74.609 W
Explanation:
<u>a.Resistance of bulb=</u>
<u>=?</u>
As we know that 
putting R as resistance of bulb i.e. 

<u>b.power consumed by bulb after motor disconnection? </u>
from the figure we see that
are in series so

current through their resistance is

Power consumed by bulb is
