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 1091:
A solid weighs 4.8g in air, 2.8g in water and 3.2g in Kerosine. The ratio of density of the solid to that of the kerosine is
Options:
A) 2
B)
C)
D) 3
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The correct answer is D .
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Question 1092:

A particle is injected perpendicularly into an electric field, it travels along a curved path as depicted in the image above,the particle is
Options:
A) gamma ray
B) electron
C) neutron
D) proton
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The correct answer is B .
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Question 1093:
A piece of substance of specific heatcapacity 450Jkgk falls through a vertical distance of 20m from rest. Calculate the rise in temperature of the substance on hitting the ground when all its energies are converted into heat. [g = 10ms]
Options:
A) ºC
B) ºC
C) ºC
D) ºC
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The correct answer is B .
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Question 1094: The gravitational field intensity at a location X, in space, is two-fifths of its value on the earth’s surface. If the weight of an object at X is 4.80N. what is its weight on the earth?
Options:
A) 1.92N
B) 2.88N
C) 6.72N
D) 8.00N
E) 12.00N
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The correct answer is E .
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Question 1095: A milliameter with full scale deflection of 10mA has an internal resistance of 5 ohms. It would be converted to an ammeter with a full scale deflection of 1A by connecting a resistance of
Options:
A) ohms in series with it
B) ohms in parallel with it
C) ohms in series with it
D) ohms in parallel with it
E) 2 ohms in series with it
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The correct answer is B .
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Question 1096: A piece of substance of specific head capacity 450JKg-1K-1 falls through a vertical distance of 20m from rest. Calculate the rise in temperature of the substance on hitting the ground when all its energies are converted into heat. [g = 10ms-2]
Options:
A) 2/9°C
B) 4/9°C
C) 9/4°C
D) 9/2°C
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The correct answer is B .
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Question 1097: Which of the following pairs of light rays shows the widest separation in the spectrum of white light?
Options:
A) Red and blue
B) Orange and green
C) Red and indigo
D) Violet and green
E) Yellow and red
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The correct answer is C .
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Question 1098: Which of the following pairs of musical instruments produce sound due to the vibration of air column?
Options:
A) Bell and piano
B) Guitar and flute
C) Trumpet and drum
D) Trumpet and flute
E) Violin and organ
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The correct answer is D .
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Question 1099: The temperature at which the water vapour present in the air saturates the air and begins to condense is known as
Options:
A) boiling point
B) melting point
C) triple point
D) dew point
E) critical temperature
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The correct answer is D .
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Question 1100: A high-resistance voltmeter reads 3.0V when connected across the terminals of a battery on open circuit and 2.6V when the battery supplies a current of 0.2A through a lamp. The resistance of lamp is
Options:
A) 2.00
B) 13.00
C) 0.52
D) 0.13
E) 1.50
Show Answer
The correct answer is B .