1
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The metal which has the highest work function in the following is

A
Cesium (Cs)
B
Sodium ( Na )
C
Aluminium (Al)
D
Platinum (Pt)
2
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Energy of a stationary electron in the hydrogen atom is $$E=\frac{13.6}{n^2} \mathrm{~eV}$$, then the energies required to excite the electron in hydrogen atom to (a) its second excited state and (b) ionised state, respectively.

A
(a) $$\sim 10 \mathrm{~eV}$$ (b) 13.6 eV
B
(a) $$\sim 12 \mathrm{~eV}$$, (b) 13.6 eV
C
(a) $$\sim 12 \mathrm{~eV}$$, (b) 10.6 eV
D
(a) $$\sim 8 \mathrm{~eV}$$, (b) 13.6 eV
3
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

The graph of $$\ln \left(\frac{R}{R_0}\right)$$ versus $\ln A$ is where $$R$$ is radius of a nucleus, $$A$$ is its mass number, and $$R_0$$ is constant

A
A straight line
B
A circle of radius R
C
A parabola
D
An ellipse
4
AP EAPCET 2022 - 4th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

Output of following logic circuit is

AP EAPCET 2022 - 4th July Morning Shift Physics - Semiconductor Devices and Logic Gates Question 2 English

A
$$(\bar{A}+B)+(\bar{A}+\bar{C})+(B+\bar{C})$$
B
$$(A+\bar{B}) \cdot(A+C) \cdot(\bar{B}+\bar{C})$$
C
$$(\bar{A}+B) \cdot(\bar{A}+\bar{C}) \cdot(B+\bar{C})$$
D
$$(\bar{A}+B)-(\bar{A}+\bar{C})-(B+\bar{C})$$
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