1
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

The distance through which one has to dig the Earth from its surface, so as to reach the point where the acceleration due to gravity is reduced by 40% of that at the surface of the Earth, is (radius of Earth is 6400 km)

A
2560 km
B
3000 km
C
3260 km
D
1560 km
2
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Infinite number of masses each of 3kg are placed along a straight line at the distances of 1 m, 2m, 4m, 8m, ...... from a point O on the same line. If G is the universal gravitational constant, then the magnitude of gravitational field intensity at O is

A
1.0 G
B
2.0 G
C
3.0 G
D
4.0 G
3
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Young's modulus of a wire is $$2 \times 10^{11} \mathrm{Nm}^{-2}$$. If an external stretching force of $$2 \times 10^{11} \mathrm{~N}$$ is applied to a wire of length $$L$$. The final length of the wire is (cross-section = unity)

A
2 L
B
1.5 L
C
3 L
D
1.25 L
4
AP EAPCET 2021 - 19th August Evening Shift
MCQ (Single Correct Answer)
+1
-0

Identify the incorrect statement regarding Reynold's number $$\left(R_e\right)$$.

A
For $$R_e < 1000$$, flow is laminar.
B
For $$1000 < R_e < 2000$$, flow is steady.
C
For $$R_e > 2000$$, flow is turbulent.
D
$$R_e$$ is a dimensionless number.
EXAM MAP