1
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The force acting on a particle of mass m moving along the X-axis is given by F(x) = Ax2 $$-$$ Bx. Which one of the following is the potential energy of the particle?
A
2Ax $$-$$ B
B
$$ - {{{x^2}} \over 6}(2Ax - 3B)$$
C
Ax3 $$-$$ Bx2
D
Zero
2
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The symbol of SI unit of inductance is H. It stands for
A
Holm
B
Halogen
C
Henry
D
Hertz
3
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
In a vacuum, a five-rupee coin, a feather of sparrow bird and a mango are dropped simultaneously from the same height. The time taken by them to reach the bottom is t1, t2 and t3, respectively. In this situation, we will observe that
A
t1 > t2 > t3
B
t1 > t3 > t2
C
t3 > t1 > t2
D
t1 = t2 = t3
4
NDA 2017 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Electron emission from a metallic surface by application of light is known as
A
thermionic emission
B
photo electric emission
C
high field emission
D
auto electronic emission
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