1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The diameter of a spherical bob, when measured with vernier callipers yielded the following values : $$3.33 \mathrm{~cm}, 3.32 \mathrm{~cm}, 3.34 \mathrm{~cm}, 3.33 \mathrm{~cm}$$ and $$3.32 \mathrm{~cm}$$. The mean diameter to appropriate significant figures is :

A
$$3.328 \mathrm{~cm}$$
B
$$3.3 \mathrm{~cm}$$
C
$$3.33 \mathrm{~cm}$$
D
$$3.32 \mathrm{~cm}$$
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

On the basis of electrical conductivity, which one of the following material has the smallest resistivity?

A
Germanium
B
Silver
C
Glass
D
Silicon
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The mechanical quantity, which has dimensions of reciprocal of mass $$(\mathrm{M}^{-1})$$ is :

A
angular momentum
B
coefficient of thermal conductivity
C
torque
D
gravitational constant
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The position of a particle is given by

$$\vec{r}(t)=4 t \hat{i}+2 t^2 \hat{j}+5 \hat{k} $$

where $$\mathrm{t}$$ is in seconds and $$\mathrm{r}$$ in metre. Find the magnitude and direction of velocity $$v(t)$$, at $$t=1 \mathrm{~s}$$, with respect to $$\mathrm{x}$$-axis

A
$$4 \sqrt{2} \mathrm{~ms}^{-1}, 45^{\circ}$$
B
$$4 \sqrt{2} \mathrm{~ms}^{-1}, 60^{\circ}$$
C
$$3 \sqrt{2} \mathrm{~ms}^{-1}, 30^{\circ}$$
D
$$3 \sqrt{2} \mathrm{~ms}^{-1}, 45^{\circ}$$
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