1
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

What is the relation obeyed by the angles of contact $$\theta_1, \theta_2$$ and $$\theta_3$$ of 3 liquids of different densities $$P_1, P_2$$ and $$P_3$$ respectively $$(\mathrm{P}_1 < \mathrm{P}_2 < \mathrm{P}_3$$) when they rise to the same capillary height in 3 identical capillaries and having nearly same surface tension $$\mathrm{T}$$ ?

A
$$ 0 \leq \theta_3<\theta_2<\theta_1<\frac{\pi}{2} $$
B
$$ \frac{\pi}{2}>\theta_1>\theta_2>\theta_3 \geq 0 $$
C
$$ \pi>\theta_1>\theta_2>\theta_3 \geq \frac{\pi}{2} $$
D
$$ 0 \leq \theta_1<\theta_2<\theta_3<\frac{\pi}{2} $$
2
COMEDK 2024 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The following are the graphs of potential barrier versus width of the depletion region for a p-n junction diode.

COMEDK 2024 Evening Shift Physics - Semiconductor Devices and Logic Gates Question 1 English

Which of the following is correct?

I II III IV`
A - unbiased diode A - Forward biased diode A - unbiased diode A - unbiased diode
B - Reverse biased B - Reverse biased B - Forward biased B - unused diode
C - Forward biased C - unbiased C - Reverse biased C - Forward biased

A
II
B
III
C
IV
D
I
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