1
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
2
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The angle of projection with the horizontal in terms of maximum height attained and horizontal range is given by

A
$${\tan ^{ - 1}}\left( {{{2H} \over {3R}}} \right)$$
B
$${\tan ^{ - 1}}\left( {{{4R} \over {3H}}} \right)$$
C
$${\tan ^{ - 1}}\left( {{{4H} \over R}} \right)$$
D
$${\tan ^{ - 1}}\left( {{R \over H}} \right)$$
3
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

For the same resonant frequency, if L is changed from L to $${L \over 3}$$, then capacitance should change from C to

A
$${C \over 3}$$
B
$$3C$$
C
$${2 \over 3}C$$
D
$$2C$$
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

The velocity of the proton is one-fourth the velocity of the electron. What is the ratio of the de-Broglie wavelength of an electron to that of a proton?

A
$$1$$
B
$$\frac{1}{2}$$
C
$$\frac{1}{3}$$
D
$$\frac{1}{4}$$
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