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Solution


Q.

Assertion : A ray of light that travels obliquely from one transparent medium into another will change its direction in the second medium.
Reason : Refraction is due to change in the speed of light as it enters from one transparent medium to another.
1 Both assertion and reason are correct and reason is the correct explanation of assertion.  
2 Both assertion and reason are correct but reason is not the correct explanation of assertion.  
3 Assertion is true but reason is false.  
4 Assertion is false but reason is true.  

Ans.

(1)

A ray of light that travels obliquely from one transparent medium to another will change its direction in the second medium. It is nothing but the process called refraction. This occurs due to change in the speed of light as it enters from one transparent medium to another. Thus, both assertion and reason are correct and reason is the correct explanation of the assertion.