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 1071: Two resistors 5Ω and 10Ω are arranged first in series and later in parallel to a 24V source, the ratio of total power dissipated in the series and parallel arrangements respectively is
Options:
A) 5:3
B) 1:50
C) 50:1
D) 3:5
E) No Correct Option
Show Answer
The correct answer is E .
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Question 1072: If a tube of small radius opened at both ends is placed in a liquid, the liquid will
Options:
A) remain at the same level irrespective of whether the liquid wet the glass or not
B) fall below the liquid level if the liquid wets the glass
C) falls below the liquid level if the liquid does not wet the glass
D) rise above the liquid level if the liquid does not wet the glass
Show Answer
The correct answer is C .
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Question 1073:
It is known that a neutron exists in a light atomic nucleus
Which of the following also exists in the nucleus?
Options:
A) An electron
B) A β - particle
C) β - particle
D) proton
Show Answer
The correct answer is D .
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Question 1074:
A current of 0.5 A flows through a resistor when connected to a 40 V battery. How much energy is dispatched in 2 minutes?
Options:
A) 2400 J
B) 9600 J
C) 1500 J
D) 1200 J
Show Answer
The correct answer is A .
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Question 1075: Which of the following physical quantities is NOT a vector?
Options:
A) velocity
B) work
C) force
D) electric field intensity
E) magnetic induction
Show Answer
The correct answer is B .
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Question 1076: A stone and a feather are dropped from the same height above the earth surface. ignoring air resistance, which of the following is correct?
Options:
A) the feather will be brown away by the wind while stone will drop steadily
B) the stone and the feather will both reach the ground a the same time
C) the feather will reach the ground first
D) the stone will reach the ground first
Show Answer
The correct answer is B .
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Question 1077:
In the figure, the value of R is
Options:
A) 3
B) 6
C) 4
D) 5
Show Answer
The correct answer is B .
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Question 1078: At what respective value of a, b, and c would the unit of work, the joule, be dimensionally similar to Ma Lb Tc?
Options:
A) 1, – 2, 1
B) 1, 2, – 2
C) 1, 1, –2
D) 2, 2, 1
Show Answer
The correct answer is B .
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Question 1079: A body of mass 100g moving with a velocity of 10.0ms-1 collides with a wall. If after collision, it moves with a velocity of 2.0ms-1 in the opposite direction, calculate the change in momentum.
Options:
A) 0.8Ns
B) 1.2Ns
C) 12.0Ns
D) 80.0Ns
Show Answer
The correct answer is B .
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Question 1080: Which of the following is a fundamental unit?
Options:
A) Newton
B) Watt
C) Joule
D) Second
Show Answer
The correct answer is D .