Q36. Large astronomical telescopes always use as objective
Question 37
Q37.
One should not connect a number of electrical appliances to the same power socket because
Question 38
Q38. Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this?
1. Diffusion
2. Refraction
3. Internal reflection
Question 39
Q39. In which of the following industries is mica as a raw material?
