1
COMEDK 2023 Evening Shift
MCQ (Single Correct Answer)
+1
-0

The force between two electric point charges at rest in air is $$F_1$$ When the same arrangement is kept inside water, the force between them is $$F_2$$. Which of the following statement is correct?

A
$$F_2=0$$
B
$$F_2>F_1$$
C
$$F_2=F_1$$
D
$$F_2< F_1$$
2
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Which of the following diagram represents the variation of the electric field with distance r from the centre of a uniformly charged non-conducting sphere of radius R?

A
COMEDK 2022 Physics - Electrostatics Question 22 English Option 1
B
COMEDK 2022 Physics - Electrostatics Question 22 English Option 2
C
COMEDK 2022 Physics - Electrostatics Question 22 English Option 3
D
COMEDK 2022 Physics - Electrostatics Question 22 English Option 4
3
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Charge on electron is

A
3.2 $$\times$$ $$10^{-19}$$ C
B
1.6 $$\times$$ $$10^{-19}$$ C
C
$$-1.6$$ $$\times$$ $$10^{-19}$$ C
D
$$-3.2$$ $$\times$$ $$10^{-19}$$ C
4
COMEDK 2022
MCQ (Single Correct Answer)
+1
-0

Two charged spheres of $$-20\mu$$C and $$60\mu$$C are kept at a certain distance. They are touched and kept again at the same distance. What is the ratio of force experienced before and after?

A
1 : 3
B
3 : 1
C
2 : 1
D
1 : 2
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