1
KCET 2021
MCQ (Single Correct Answer)
+1
-0

A $$2 \mathrm{~g}$$ object, located in a region of uniform electric field $$\mathrm{E}=\left(300 \mathrm{NC}^{-1}\right) \hat{\mathbf{i}}$$ carries a charge $$Q$$. The object released from rest at $$x=0$$, has a kinetic energy of $$0.12 \mathrm{~J}$$ at $$x=0.5 \mathrm{~m}$$. Then, $$Q$$ is

A
$$400 \mu \mathrm{C}$$
B
$$-400 \mu \mathrm{C}$$
C
$$800 \mu \mathrm{C}$$
D
$$-800 \mu \mathrm{C}$$
2
KCET 2021
MCQ (Single Correct Answer)
+1
-0

Which of the following statements is false in the case of polar molecules?

A
Centres of positive and negative charges are separated in the absence of external electric field.
B
Centres of positive and negative charges are separated in the presence of external electric field.
C
Do not possess permanent dipole moments.
D
Ionic molecule $$\mathrm{HCl}$$ is the example of polar molecule.
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