Physics is the science that studies the nature and properties of matter and energy. It covers topics like motion, heat, light, sound, electricity, magnetism, and the structure of atoms.
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Question 191:
The diagram above shows a velocity - time graph. The statement that is true about this motion is that the car
Options:
A) has no acceleration between point F and G
B) decelerates between F and H
C) has a constant soeed between points E and F
D) Accelerates between points F and G
Show Answer
The correct answer is A .
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Question 192:
Lamps in domestic lightings are usually in
Options:
A) series
B) divergent
C) convergent
D) parallel
Show Answer
The correct answer is D .
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Question 193: A note is called an octave of another note when
Options:
A) its frequency is twice that of the first note
B) its frequency is half of the first note
C) the notes have the same fundamental frequency
D) its periodic time is twice that of the first note
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The correct answer is A .
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Question 194: A temperature 20oC is the same as
Options:
A) 36oF
B) 60oF
C) 11.1oF
D) 43.1oF
E) 25oF
Show Answer
The correct answer is B .
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Question 195:
In the figure above, XY is of length 1m, The value of R at balance point Z is
Options:
A) 3.0Ω
B) 13.3Ω
C) 15.0Ω
D) 30.0Ω
Show Answer
The correct answer is D .
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Question 196: Two 50F parallel plate capacitors are connected in series. The combined capacitor is then connected across a 100-V battery. The charge on each plate of the capacitor is
Options:
A) 5.00 x 10-5C
B) 2.50 x 10-3C
C) 1.25 x 10-3C
D) 1.00 x 10-2C
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The correct answer is B .
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Question 197: A body of mass 4kg is acted on by a constant force of 12N for 3 seconds. The kinetic energy gained by the body at the end of the time is
Options:
A) 144J
B) 162J
C) 81J
D) 72J
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The correct answer is B .
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Question 198:
The fiqure above represents a block-and-tackle pulley system on which an effort of W Newtons supports a load of 120.0N. If the efficiency of the machine is 40, then the value of W is
Options:
A) 28.0N
B) 48.0N
C) 288.0N
D) 50.0N
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The correct answer is D .
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Question 199: When an atom loses or gains a charge, it becomes an
Options:
A) ion
B) an electron
C) a neutron
D) a proton
E) a deuteron
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The correct answer is A .
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Question 200:
In the figure, the value of R is
Options:
A) 3
B) 6
C) 4
D) 5
Show Answer
The correct answer is B .