1
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Two balls $$A$$ and $$B$$, of masses $$M$$ and $$2 M$$ respectively collide each other. If the ball $$A$$ moves with a speed of $$150 \mathrm{~ms}^{-1}$$ and collides with ball $$B$$, moving with speed $$v$$ in the opposite direction. After collision if ball $$A$$ comes to rest and the coefficient of restitution is 1 (one), then the speed of the ball $$B$$ before it collides with ball $$A$$ is

A
$$37.5 \mathrm{~ms}^{-1}$$
B
$$12.5 \mathrm{~ms}^{-1}$$
C
$$75 \mathrm{~ms}^{-1}$$
D
$$25 \mathrm{~ms}^{-1}$$
2
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A solid sphere of radius $$R$$ has its outer half removed, so that its radius becomes $$(R / 2)$$. Then its moment of inertia about the diameter is

A
becomes $$\frac{1}{2}$$ of its initial value.
B
is unchanged.
C
becomes $$\frac{1}{16}$$ of initial value.
D
becomes $$\frac{1}{32}$$ of initial value.
3
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

Which of the following is not true about vectors $$\mathbf{A}, \mathbf{B}$$ and $$\mathbf{C}$$ ?

A
$$(\mathbf{A} \cdot \mathbf{A})(\mathbf{B} \cdot \mathbf{C})$$ is a scalar value.
B
$$(\mathbf{A} \times \mathbf{B}),(\mathbf{B} \times \mathbf{C})$$ is a scalar value.
C
$$(\mathbf{A} \times \mathbf{C}) \times(\mathbf{B} \times \mathbf{C})$$ is a scalar value.
D
$$\mathbf{A} \times(\mathbf{B} \times \mathbf{C})$$ is a vector value.
4
AP EAPCET 2022 - 4th July Evening Shift
MCQ (Single Correct Answer)
+1
-0

A body is executing S.H.M. At a displacement $$x$$ its potential energy is 9 J and at a displacement $$y$$ its potential energy is 16 J . The potential energy at displacement $$(x+y)$$ is

A
25 J
B
5 J
C
49 J
D
7 J
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