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 601: In the calibration of an ammeter using faraday's laws of electrolysis, the ammeter reading is kept constant at 1.2A. If 0.990g of copper is deposited in 40 minutes , the correction to be applied to the ammeter is
Options:
A) 0.03A
B) 0.04A
C) 0.05A
D) 0.06A
Show Answer
The correct answer is C .
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Question 602:
The volume of a stone having an irregular shape can be determined using?
Options:
A) meter rule
B) measuring cylinder
C) vernier calliper
D) micrometer screw gauge
Show Answer
The correct answer is B .
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Question 603:
The sensitivity of a thermometer is
Options:
A) All of the above
B) how quickly a temperature change can be detected
C) the difference between the maximum and the minimum temperature
D) the smallest temperature change that can be detected or measured
Show Answer
The correct answer is D .
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Question 604:
A rope is being used to pull a mass of 10kg vertically upward. Determine the tension in the rope if, starting from rest, the mass acquires a velocity of 4ms-1 in 8s [g = 10ms-2]
Options:
A) 5N
B) 50N
C) 95N
D) 105N
Show Answer
The correct answer is C .
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Question 605:
Which of the following liquids has the highest surface tension?
Options:
A) Soapy water
B) Water
C) Mercury
D) Oil
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The correct answer is C .
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Question 606:
A bar magnet is divided into two pieces, which of the following statement is correct?
Options:
A) two new magnets are created
B) the magnetic field of each separate piece becomes stronger
C) the electric field is created
D) the bar magnet is demagnetized
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The correct answer is A .
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Question 607: Which of the following statements is correct about light and sound waves? Both
Options:
A) are longitudinal waves
B) are transverse waves
C) have the same velocity in air
D) need a medium for propagation
E) transmit energy
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The correct answer is E .
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Question 608: The thermos flask is designed to?
Options:
A) prevent heat loss or gain by conduction, convection amd radiation
B) store hot tea or water
C) prevent heat gain by conduction, convection and radiation
D) prevent head lost conduction, convention and radiation
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The correct answer is A .
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Question 609: A stand-by generator is connected to fifteen 40 W lamps and musician's 600 W amplifying system. How much energy is used if the generator runs for 6 hours?
Options:
A) 3.84k Wh
B) 7.20k Wh
C) 8.40k Wh
D) 12.00k Wh
E) 14.56k Wh
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The correct answer is B .
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Question 610: 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 .