The following questions given below consist aof an ‘assertion’
A
and ‘Reason (R) type questions. Use the following key to choose the appropriate answer. If both and (R) true and (R) is the correct explanation of . and (R) true but (R) is not correct explanation of . is true and (R) is false. is false but (R) is true. (i) Assertion : Differentiation of tanx + cotx is sec 2 x – cosec 2 x. Reason: Acceleration equal to 
. Where v is velocity. A A A A
. Where v is velocity. A A A A
B
If both B B B B
C
If C C C C
D
If D (ii) Assertion : Integration of e x w.r.t. x is log x. Reason : Differentiation of log x is 1/x. D (iii) Assertion : If 
= 
+ 
then magnitude of 
will be 
. Reason : | 
× 
| = AB sin θ .] D (iv) Assertion : Direction of 
× 
will be ⊥ r to the vector 
. Reason : Direction of 
× 
will be ⊥ r to the vector 
D
= + then magnitude of will be . Reason : | × | = AB sin θ .] D (iv) Assertion : Direction of × will be ⊥ r to the vector . Reason : Direction of × will be ⊥ r to the vector D
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION
Ans.
(i)
Sol.
(ii)
Sol.
(iii)
Sol.
(iv)
Sol.
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