Question

Burning lack of light to the same medium?

Class 10​

Answer 1

As ray of light falls normally on mirror, this means that angle of incidence is 0o. From second law of reflection, we know that angle of incidence is equal to angle of reflection. So, angle of reflection will also be zero. Therefore, the light ray will be reflected back along the same path.

Answer 2

Answer:

In early carpal tunnel syndrome (CTS), paresthesias are intermittent, and the hand is reported as falling asleep, with pins and needles sensation.

Most often, the symptoms are in the thumb, index, and middle finger. Classic CTS includes symptoms affecting at least 2 of the first 3 digits, but not the palm of dorsum of the hand.

Many patients report that the entire hand falls asleep. Detailed questioning sometimes reveals that the digit 5 is not affected. Others, if asked to observe whether the little finger is involved, often note subsequently that it is spared.

A diagram of symptoms in the hand can help patients to localize symptoms. In a clinic-based sample, a diagram of symptoms (Katz hand diagram of classic or probable CTS) had a sensitivity of 61% and a specificity of 71% for the diagnosis