IBDP Physics Question Analysis Topic: Physics - Short Questions
1) While travelling back to his residence in the car, Dr. Pathak was caught up in a thunderstorm. It became very dark. He stopped driving the car and waited for thunderstorm to stop. Suddenly he noticed a child walking alone on the road. He asked the boy to come inside the car till the thunderstorm stopped. Dr. Pathak dropped the boy at his residence. The boy insisted that Dr. Pathak should meet his parents. The parents expressed their gratitude to Dr. Pathak for his concern for safety of the child.
Answer the following questions based on the above information:
(a) Why is it safer to sit inside a car during a thunderstorm?
(b) Which two values are displayed by Dr. Pathak in his action?
(c) Which values are reflected in parents' response to Dr. Pathak?
(d) Give an example of similar action on your part from your everyday life?
2) (a) Write the necessary conditions for the phenomenon of total internal reflection to occur.
(b) Write the relation between the refractive index and critical angle for a given pair of optical media.
1) (a) This is due to the fact that a car can work similarly to a Faraday cage, making it safer to sit inside it during a thunderstorm.
(b) Awareness and a sense of humanity.
(c) Gratitude and respect.
(d) Any acceptable answer
2) (a) First, the incident ray on the surface must travel in an optically denser medium. Secondly, for the given pair of optical media, the angle of incidence should be greater than the critical angle.
(b) μ = 1 / sin C∘ x μ0 = 1sinC
End of analysis. Great!