A ray of light is passing through an another medium by making an angle of 45°. If the refractive index of the medium is 1.4, calculate the magnitude of angle of refraction. The apparent depth of water in a pond appears less than the real depth. Why?​

State one advantage and one disadvantage of using a plane mirrior as a driving mirrior

Classify each possible hypothesis about a medicinal aloe vera plant as falsifiable or non-falsifiable. aloe vera gel is the best natural skin moisturizer. aloe vera gel can heal wounds by boosting cell renewal. aloe vera juice tastes better than carrot juice. drinking aloe juice can reduce the risk of lung cancer.

What are atoms of the same element with varying number of neutrons