1
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
We hear an echo due to
1
Refraction of sound waves
2
Reflection of sound waves
3
Diffraction of sound waves
4
Resonance due to sound waves
2
NDA General Ability 13 April 2025
MCQ (Single Correct Answer)
+4
-1.33
Change Language
At uniform speed the acceleration is
1
Maximum
2
Minimum
3
Zero
4
Constant
3
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language

An infinite combination of resistors, each having resistance $R = 4 \Omega$, is given below. What is the net resistance between the points A and B? (Each resistance is of equal value, $R = 4 \Omega$)

NDA General Ability 21 April 2024 General Science - Physics Question 157 English

A

$0 \Omega$

B

$2 + 2\sqrt{5} \Omega$

C

$2 + \sqrt{5} \Omega$

D

$\infty \Omega$

4
NDA General Ability 21 April 2024
MCQ (Single Correct Answer)
+4
-1.33
Change Language

An electric circuit is given below. $V_1 = 1 V$ and Resistance $R = 1000 \Omega$.

NDA General Ability 21 April 2024 General Science - Physics Question 156 English 1

The current through the resistance $R$ is very close to $1$ mA and the voltage across point A and B, $V_{AB} = 1 V$. Now the circuit is changed to :

NDA General Ability 21 April 2024 General Science - Physics Question 156 English 2

where value of $V_2 = 5 V$. The internal resistances of both the batteries are $0.1 \Omega$. The current through the resistance $R$ is about :

A

$1.0$ mA

B

$1.2$ mA

C

$3.0$ mA

D

$5.0$ mA

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