SuperCoaching AE/JE by Testbook
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A ball dropped from height 'h' reaches ground in time 't'. From what height should it be dropped to reach in t/2?
Anonymous Quiz
16%
h/4
57%
h/2
23%
2h
4%
4h
A ball is thrown upwards. At its highest point, its velocity is:
Anonymous Quiz
13%
Maximum
24%
Minimum
60%
Zero
3%
Constant
1
A ball is dropped from height h. Air resistance is proportional to velocity. Terminal velocity is v_t. What's the ball's acceleration as it approaches v_t?
Anonymous Quiz
14%
g
36%
0
43%
>0, <g
7%
>g
What's the remainder when 7^103 is divided by 5?
Anonymous Quiz
9%
0
39%
1
31%
2
21%
3
A satellite orbits Earth. If its orbital radius increases, what happens to its speed?
Anonymous Quiz
24%
Increases
40%
Decreases
33%
Remains constant
3%
Oscillates
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A projectile launched at 45° has range R. At what angle, same initial speed, is range R/2?
Anonymous Quiz
5%
15°
22%
75°
67%
Both 15° & 75°
6%
30°
Which has the highest lattice energy?
Anonymous Quiz
31%
NaCl
27%
KCl
36%
MgO
6%
CaO
👍3
Which molecule exhibits resonance?
Anonymous Quiz
15%
CH₄
41%
H₂O
25%
O₃
19%
NH₃
2
Forwarded from SuperCoaching AE/JE by Testbook (Vivek)
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