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:

The diagram shows four positions of the bob of a simple pendulum. At which of these positions does the bob have maximum kinetic energy and minimum potential energy
Options:
A) 1
B) 2
C) 3
D) 4
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The correct answer is B .
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Question 1092: The velocities of light in air and glass are 3.0 x 108ms-1 and 2.0 x 108ms-1 respectively. If the angle of refraction is 30°, the sine of the angle of incidence is
Options:
A) 0.33
B) 0.50
C) 0.67
D) 0.75
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The correct answer is D .
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Question 1093: When white light is dispersed by a spectrometer, the component having the shortest wavelength is
Options:
A) orange
B) green
C) violet
D) red
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The correct answer is C .
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Question 1094: Three 5 ohms resistors connected in parallel have a potential difference of 60v. applied across the combination. The current in each resistor is
Options:
A) 4A
B) 36A
C) 12A
D) 24A
E) 10A
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The correct answer is C .
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Question 1095:
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
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The correct answer is A .
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Question 1096: In the study of physics, temperature and heat are often confused with each other. Which of the following statements correctly defines these two element?
Options:
A) temperature is a measure of the average kinetic energy of the molecules of a substance
B) heat is a measure of the total kinetic energy of the molecules in a system
C) different materials require different amounts of heat to cause a given change in temperature
D) all of the above
E) A and B only
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The correct answer is D .
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Question 1097:
How much net work is required to accelerate a 1200 kg car from 10 to 15
Options:
A) 1.95×
B) 1.35×
C) 7.5×
D) 6.0×
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The correct answer is C .
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Question 1098: An equipment whose power is 1500W and resistance is 375 ohms would draw a current of
Options:
A) 0.10A
B) 2.00A
C) 4.00A
D) 77.5A
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The correct answer is B .
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Question 1099:

In the Figure above, QR is a vertical conductor and the current I flows from R to Q, P is a point on the horizontal plane and is to the south of the wire. The direction of the magnetic field at P due to the current is
Options:
A) Upward
B) North
C) South
D) West
E) East
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The correct answer is D .
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Question 1100: A car of mass 800kg attains a speed of 25m/s in 20 secs. The power developed in the engine is
Options:
A) 1 . 25 x 104 W
B) 2 . 50 x 104 W
C) 1 . 25 x 106W
D) 2 . 50 x 106 W
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The correct answer is B .