1
NDA General Ability 16 April 2023
+4
-1.33
One block of 2⋅0 kg mass is placed on top of another block of 3⋅0 kg mass. The coefficient of static friction between the two blocks is 0⋅2. The bottom block is pulled with a horizontal force F such that both the blocks move together without slipping. Taking acceleration due to gravity as 10 m/s2, the maximum value of the frictional force is :
A
50 N
B
30 N
C
4 N
D
10 N
2
NDA General Ability 16 April 2023
+4
-1.33
A mass is attached to a spring that hangs vertically. The extension produced in the spring is 6 cm on Earth. The acceleration due to gravity on the surface of the Moon is one-sixth of its value on the surface of the Earth. The extension of the spring on the Moon would be:
A
6 cm
B
cm
C
cm
D
36 cm
3
NDA General Ability 16 April 2023
+4
-1.33
Which one of the following is an example of Second Class Lever?
A
A pair of scissors
B
A bottle opener
C
A cricket bat
D
A bow and arrow
4
NDA General Ability 16 April 2023
+4
-1.33
In an electric circuit, a wire of resistance 10 Ω is used. If this wire is stretched to a length double of its original value, the current in the circuit would become :
A
half of its original value.
B
double of its original value.
C
one-fourth of its original value.
D
four times of its original value.
EXAM MAP
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