Unpolarized light passes through two ideal polaroid sheets. 12.3% of the incident light is transmitted. what is the angle between the transmission axes of the polaroid sheets?

Explanation:

If I be the intensity of original light , after first polarization , its intensity becomes I/2

After second polarization its intensity becomes I/2 X Cos²θ

where θ is the angle between the two polaroids

So I₁ = I/2 Cos²θ

I₁ / I =.5 X Cos²θ = 0.123

Cos²θ = 0.246

θ = 60 degree. Ans

explanation: magnetic pole, region at each end of a magnet where the external magnetic field is strongest. the south-seeking pole, or any pole similar to it, is called a south magnetic pole. unlike poles of different magnets attract each other; like poles repel each other.

answer: d. a cme increases the amount of energy in the solar wind

explanation:

coronal mass ejections, also called cmes, are large clouds of plasma and magnetic field that erupt from the sun. only when the cloud is aimed at earth will the cme hit earth and therefore cause impacts. high-speed solar wind streams come from areas on the sun known as coronal holes.