Q35 of 60 Page 1

When a ray of light passes through a glass slab how many times does it change its path and why?

When a ray of light passes through a glass slab, it travels from air to glass, and therefore it will bend towards the normal as air is a rarer medium and glass is a denser medium. When the ray of light moves out of the glass slab, the ray of light again bends and since it is travelling from denser to rarer medium, so it bends away from normal


More from this chapter

All 60 →
33

In the following diagram showing the structure of embryo of a dicot seed, what are the parts marked I, II and III sequentially?

 34

What happens when acetic acid is added in a solution of NaCO3 in a test tube. Write the equation for detecting the gas evolved.

 36

Why do raisins absorb water when soaked in water? Explain the phenomenon.

 1

Write the atomic numbers of two elements 'X' and 'Y' having electronic configuration 2,8,2 and 2,8,6 respectively.