Answer:
The correct option is;
c. Temperature and color
Explanation:
Based on Wien's Law which can be presented mathematically as follows;
The wavelength of the peak of the blackbody curve tells the temperature and color.
An example is the Sun that has a temperature of 5800 K, hence the peak wavelength is given by 
= 500 nano-meter from which the color can be deduced as 500 nano-meter is the wavelength of yellow light.
Answer:
Explanation:
Two moles of an ideal gas at 3.0 atm and 10°C are heated up to 150 °C. If the volume is held constant during this heating, what is the final pressure? a. 4.5 atm.
The correct answer of this question is : Negative focal length and virtual images.
EXPLANATION:
The concave lens is that transparent spherically refracting surface which is diverging in nature. It is so because it is bulged at the edges and thinner in the centre.
The focal length of the concave lens is always taken negative.
As the lens is diverging in nature, it always forms virtual,erect and diminished image. It means the image formed by concave lens has less size as compared to object.
Hence, the correct answer of this question is that concave lenses have negative focal length and always form virtual images.
weight = mass*g is the formula
