1
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Which of the diagrams correctly represents the electric field between two charged plates if a neutral conductor is placed in between the plates?
A
B
C
D
2
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
The magnitude of electric field due to a point charge 2q, at distance r is E. Then the magnitude of electric field due to a uniformly charged thin spherical shell of radius R with total charge q at a distance $${r \over 2}(r > > R)$$ will be
A
$${E \over 4}$$
B
0
C
2E
D
4E
3
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
A square sheet of side 'a' is lying parallel to XY plate at z = a. The electric field in the region is $$\overrightarrow E = c{z^2}\widehat k$$. The electric flux through the sheet is
A
a4c
B
$${1 \over 3}$$a3c
C
$${1 \over 3}$$a4c
D
0
4
CBSE 12th Physics (Term 1) Paper 2021-22
MCQ (Single Correct Answer)
+0.77
-0
Three charges q, $$-$$q and q0 are placed as shown in figure. The magnitude of the net force on the charge q0 at point O is $$\left[ {k = {1 \over {(4\pi { \in _0})}}} \right]$$

A
0
B
$${{2kq{q_0}} \over {{a^2}}}$$
C
$${{\sqrt 2 kq{q_0}} \over {{a^2}}}$$
D
$${1 \over {\sqrt 2 }}{{kq{q_0}} \over {{a^2}}}$$
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