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 521: A handbag containing some load weighing 162N is carried by two students each holding the handle of the bag next to him. If each handle is pulled to the vertical, find the force on each student's arm
Options:
A) 81N
B) 121N
C) 162N
D) 324N
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The correct answer is C .
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Question 522:
On a particular hot day, the temperature is 40°C and the partial pressure of water vapor in the air is 38.8 mmHg. What is the relative humidity?
Options:
A) 70
B) 62
C) 80
D) 42
Show Answer
The correct answer is A .
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Question 523:
A body was slightly displaced from its equilibrium position. Which one of the following is a condition for its stable equilibrium
Options:
A) an increase in the kinetic energy of the body
B) an increase in the potential energy of the body
C) a decrease in the kinetic energy of the body
D) an increase in the height of the body
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The correct answer is B .
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Question 524:
In an AC circuit, resonance occurs when the impedance of the circuit is:
Options:
A) Zero
B) Maximum
C) Equal to the capacitive reactance of the circuit
D) Minimum
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The correct answer is D .
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Question 525: The thermometric properties of the thermocouple is that is
Options:
A) e.m.f. changes with temperature
B) resistance changes with temperature
C) volume changes with temperature
D) pressure changes with resistance
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The correct answer is A .
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Question 526: If a room is saturated with water vapour, the temperature of the room must be
Options:
A) at 0oC
B) above the dew point
C) at 100oC
D) below or at the dew point
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The correct answer is D .
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Question 527: Calculate the mass of the copper deposited during electrolysis when a current of 4A passes through a copper salt for 2 hours. [Ece of Copper z=3.3x10-7kgC-1]
Options:
A) 2.9x105kg
B) 9.5x10-7kg
C) 9.5x10-3kg
D) 2.9x104kg
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The correct answer is C .
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Question 528:
The figure above shows a plot of angles of deviation through a glass prism when light is incident at θ degrees on the prism. The incident angle that produces the minimum deviation is
Options:
A) 20o
B) 18o
C) 35o
D) 25o
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The correct answer is D .
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Question 529:
2311Na + Proton → pqX + alpha particle
What are the values of p and q respectively in the equation above?
Options:
A) 10 and 20
B) 12 and 24
C) 20 and 10
D) 24 and 12
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The correct answer is C .
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Question 530:
Neutrons were discovered by
Options:
A) Faraday
B) Dalton
C) James Chadwick
D) Rutherford
Show Answer
The correct answer is C .