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 1211: Which of the following is a fundamental unit?
Options:
A) Newton
B) Watt
C) Joule
D) Second
Show Answer
The correct answer is D .
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Question 1212:
A 2H inductor has negligible resistance and is connected to a Hz A.C supply. The reactance of the inductor is?
Options:
A) 200
B) 50
C)
D)
Show Answer
The correct answer is A .
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Question 1213: A man of mass 50kg ascends a flight of stains 5m high in 5 seconds. If acceleration due to gravity is 10ms the power expended is
Options:
A) 100w
B) 200w
C) 400w
D) 500w
Show Answer
The correct answer is D .
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Question 1214: If the refractive index of a medium is V2, what is the critical angle?
Options:
A) 45o
B) 50o12'
C) 56o25'
D) 75o
E) 90o
Show Answer
The correct answer is A .
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Question 1215: At low humidity in an environment, the human skin is usually?
Options:
A) damp and rough
B) damp and smooth
C) dry and rough
D) dry and smooth
Show Answer
The correct answer is C .
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Question 1216:

The diagram above shows a plank RS pivoted its center of gravity O and is in equilibrium with the weight P and Q. If a weight 2P is added to P the plank will be in equilibrium again by
Options:
A) moving Q nearer to O
B) moving P nearer to O
C) addding a weight Q to Q
D) moving P further away from O
Show Answer
The correct answer is B .
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Question 1217: The phenomenon of light bending round an obstacle is?
Options:
A) diffraction
B) refraction
C) reflection
D) polarization
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The correct answer is A .
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Question 1218: What is the relative permitivity of a capacitor if its capacitance with a medium as dielectric is 16 farads and its capacitance with vacuum as dielectric is 2 farads?
Options:
A) o
B)
C) 2
D) 8
E) 32
Show Answer
The correct answer is D .
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Question 1219: Which of the following quantities are scalars? i. Electrical potential ii. Torque iii. Momentum iv. Kinetic energy
Options:
A) ii and iii only
B) i and ii only
C) iii and iv only
D) i and iv only
Show Answer
The correct answer is D .
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Question 1220: In which of the following material media will sound travel fastest?
Options:
A) oil
B) metal
C) gas
D) water
Show Answer
The correct answer is B .