1
WB JEE 2021
MCQ (Single Correct Answer)
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WB JEE 2021 Physics - Electronic Devices Question 8 English
What is the value of current through the diode in the circuit given?
A
Zero
B
1 mA
C
19 mA
D
9 mA
2
WB JEE 2021
MCQ (Single Correct Answer)
+1
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WB JEE 2021 Physics - Electronic Devices Question 7 English
For the given logic circuit, the output Y for inputs (A = 0, B = 1) and (A = 0, B = 0) respectively are
A
0, 0
B
0, 1
C
1, 0
D
1, 1
3
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
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From dimensional analysis, the Rydberg constant can be expressed in terms of electric charge (e), mass (m) and Planck constant (h) as [consider $${1 \over {4\pi {\varepsilon _0}}} \equiv 1$$ unit]
A
$${{{h^2}} \over {m{e^2}}}$$
B
$${{m{e^4}} \over {{h^2}}}$$
C
$${{{m^2}{e^4}} \over {{h^2}}}$$
D
$${{m{e^2}} \over {{h^2}}}$$
4
WB JEE 2021
MCQ (Single Correct Answer)
+1
-0.25
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WB JEE 2021 Physics - Laws of Motion Question 8 English
Three blocks are pushed with a force F across a frictionless table as shown in figure above. Let N1 be the contact force between the left two blocks and N2 be the contact force between the right two blocks. Then,
A
F > N1 > N2
B
F > N2 > N1
C
F > N1 = N2
D
F = N1 = N2
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