SuperCoaching AE/JE by Testbook
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Which molecule has the highest dipole moment?
Anonymous Quiz
15%
CO2
28%
BF3
46%
H2O
11%
CCl4
4
A photon's energy doubles. How's its momentum affected?
Anonymous Quiz
9%
Halved
47%
Remains same
36%
Doubles
9%
Quadruples
1
If f(x) = x² + 1/x, find f'(2).
Anonymous Quiz
16%
4.75
51%
3.75
32%
4.25
2%
3.25
A ball is dropped from height 'h'. After impact with the ground it rebounds to h/2. Coeff. of restitution is:
Anonymous Quiz
18%
1/2
63%
1/√2
15%
1/4
4%
√2
1
What's the limit of (sin x)/x as x approaches 0?
Anonymous Quiz
15%
0
64%
1
18%
Infinity
4%
Undefined
What is the area of a circle with radius 3?
Anonymous Quiz
12%
15%
9
68%
5%
What is the limit of (sin x)/x as x approaches 0?
Anonymous Quiz
7%
0
73%
1
17%
3%
-1
A ball thrown upwards has velocity 0 at its peak. What's its acceleration there?
Anonymous Quiz
47%
9.8 m/s² down
31%
0 m/s²
19%
9.8 m/s² up
3%
Depends on initial velocity