1
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
Charges are placed on the vertices of a square as shown. Let $$\overrightarrow E $$ be the electric field and $$V$$ the potential at the center. If the charges on $$A$$ and $$B$$ are interchanged with those on $$D$$ and $$C$$ respectively, then AIEEE 2007 Physics - Electrostatics Question 217 English
A
$$\overrightarrow E $$ changes, $$V$$ remains unchanged
B
$$\overrightarrow E $$ remains unchanged, $$V$$ changes
C
both $$\overrightarrow E $$ and $$V$$ change
D
$$\overrightarrow E $$ and $$V$$ remain unchanged
2
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
A $$2$$ $$kg$$ block slides on a horizontal floor with a speed of $$4m/s.$$ It strikes a uncompressed spring, and compress it till the block is motionless. The kinetic friction force is $$15N$$ and spring constant is $$10, 000$$ $$N/m.$$ The spring compresses by
A
$$8.5cm$$
B
$$5.5cm$$
C
$$2.5cm$$
D
$$11.0cm$$
3
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
An electric charge $${10^{ - 3}}\,\,\mu \,C$$ is placed at the origin $$(0,0)$$ of $$X-Y$$ co-ordinate system. Two points $$A$$ and $$B$$ are situated at $$\left( {\sqrt 2 ,\sqrt 2 } \right)$$ and $$\left( {2,0} \right)$$ respectively. The potential difference between the points $$A$$ and $$B$$ will be
A
$$4.5$$ volts
B
$$9$$ volts
C
zero
D
$$2$$ volts
4
AIEEE 2007
MCQ (Single Correct Answer)
+4
-1
A sound absorber attenuates the sound level by $$20$$ $$dB$$. The intensity decreases by a factor of
A
$$100$$
B
$$1000$$
C
$$10000$$
D
$$10$$
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