1
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The formula of capacitative reactance is

A
$$2\pi fC$$
B
$$\frac{fC}{2\pi}$$
C
$$\frac{C}{2\pi f}$$
D
$$\frac{1}{2\pi fC}$$
2
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Which graph shows the correct $$v$$ - $$x$$ graph of a freely falling body?

A
COMEDK 2021 Physics - Motion Question 13 English Option 1
B
COMEDK 2021 Physics - Motion Question 13 English Option 2
C
COMEDK 2021 Physics - Motion Question 13 English Option 3
D
COMEDK 2021 Physics - Motion Question 13 English Option 4
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The displacement $$x$$ of a particle varies with time $$t$$, $$x=ae^{-pt}+be^{qt}$$, where a, b, p and q are positive constant. The velocity of the particle will

A
go on increasing forever
B
be independent of p and q
C
drop to zero when p = q
D
go on decreasing with time
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Which of the following quantity represents the dimensions of momentum?

A
Impulse
B
Pressure
C
Viscosity
D
Power
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