Assertion : When focal length of a lens increases , then its power decreases Reason: Power of a lens is inversely proportional to focal length of lens *
1 point
A - Both A and R are true and R is the correct explanation of A.
B - Both A and R are true but R is NOT the correct explanation of A.
C - A is true but R is false.
D - A is false but R is true.
E - Both A and R are false.
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Assertion : When focal length of a lens increases , then its power decreases
Reason : Power of a lens is inversely proportional to focal length of lens.
A) both A and R are correct and R is correct explaination of A .
tips of solving reason assertion :-
- the assertion should be well studied
- know the basic concepts
- try rectify the statement
- learn to eliminate the option
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Answer:
a Both A and R are true and R is the correct explanation of A.
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