1
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0
If $E$ and $E_0$ denote energies at time $t$ and $t_0$ respectively, and $L$ and $L_0$ distance from same point at $t$ and $t_0$ respectively, then which of the following equations can be declared to be incorrect on dimensional grounds? (A) $E=\frac{2 E_0 L}{L_0}$ (B) $E=E_0 e^{-2 L / L_0}$ (C) $E=2 L e^{-L / E_0}$ (D) $E=2\left(E_0 / L_0\right) \times e^{-L / L_0}$
A

A, B only

B

A, C only

C

A, C, D only

D

C, D only

2
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A body starts from the rest and acquires a velocity of $10 \mathrm{~m} / \mathrm{s}$ in 2s. What is the acceleration of the body and the distance travelled?

A

$5 \mathrm{~m} / \mathrm{s}^2$ and 10 m

B

$5 \mathrm{~m} / \mathrm{s}^2$ and 5 m

C

$5 \mathrm{~m} / \mathrm{s}^2$ and 6 m

D

$6 \mathrm{~m} / \mathrm{s}^2$ and 5 m

3
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

A bullet fired into a target losses one-third of its velocity after travelling a distance $x$ metre into the target. If the bullet comes to rest by travelling a further distance $x^{\prime}$, then the ratio $\frac{x^{\prime}}{x}$ is

A

$\frac{2}{3}$

B

$\frac{1}{3}$

C

$\frac{4}{5}$

D

$\frac{4}{9}$

4
TS EAMCET 2022 (Online) 18th July Morning Shift
MCQ (Single Correct Answer)
+1
-0

An ant starts from the origin and crawls 10 cm along the $X$-axis and then 20 cm along the $Y$-axis. The dot product of the ant's displacement vector with the position vector of a point that makes $45^{\circ}$ with the $X$-axis and has a magnitude of $\sqrt{2} \mathrm{~cm}$ is

A

30 cm

B

$30 \sqrt{2} \mathrm{~cm}$

C

$\frac{30}{\sqrt{2}} \mathrm{~cm}$

D

15 cm

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