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

For an ideal gas, coefficient of volume expansion is given by

A
$$\frac{1}{p}$$
B
$$\frac{1}{pV}$$
C
$$\frac{1}{R}$$
D
$$\frac{1}{T}$$
4
COMEDK 2021
MCQ (Single Correct Answer)
+1
-0

Which of the following is not a green house gas?

A
CH$$_4$$
B
CO$$_2$$
C
O$$_3$$
D
H$$_2$$O
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