Practicing Success

Register
Start Free Mocks
CUETMOCK

Ace Your

CUET Preparation Today

Start Free Mocks
Home Questions KHE2KEZGYB
Target Exam

CUET

Subject

Physics

Chapter

Ray Optics

Question:

The time required for light to pass through a glass slab of 2 mm thickness is ($\mu_{glass} = 1.5$)

Options:

10–8 s             

10–6 s

 10–11 s 

None of these

Correct Answer:

 10–11 s 

Explanation:

$\text{Speed of light in glass is } v = \frac{c}{\mu_g} = 2\times 10^8m/s$
$\text{Time taken to cross the glass slab is } t = \frac{d}{v} = \frac{2\times 10^{-3}}{2\times 10^8} = 10^{-11} sec$

CUET Questions