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 1151:

PQRS is rectangular cell with PQ perpendicular to the magnetic field as shown above. If a current flows in the the direction PQRS in what direction will the coil move
Options:
A) Upwards
B) Downwards
C) TOwards The North Pole
D) Towards The South Pole
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The correct answer is A .
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Question 1152:
An a.c of 1A at a frequency of 800 cycles per second flows through a coil, the inductance of which is 2.5mH and the resistance of which is 5Ω. What is the power absorbed in the Coil?
Options:
A) 5W
B) 6W
C) 7W
D) 8W
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The correct answer is A .
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Question 1153: The spiral spring of a spring balance is 25.0cm long when 5N hangs on it and 30cm long, when the weight is 10N. What is the length of the spring if the weight is 3N assuming Hooke's law is obeyed?
Options:
A) 15.0cm
B) 17.0cm
C) 20.0cm
D) 23.0cm
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The correct answer is D .
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Question 1154: During a thunderstorm, the sound is heard over a long time. this phenomenon is referred to as
Options:
A) diffraction of sound
B) refraction of sound
C) superposition
D) reveraberation
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The correct answer is D .
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Question 1155:
An incident ray XY makes an angle of 15 with a fixed line AY which is normal to surface of a plane mirror if the mirrow is turned as indicated by the arrow through , what angle will the reflected ray make with AY?
Options:
A)
B)
C)
D)
E)
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The correct answer is D .
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Question 1156: At what respective value of a, b, and c would the unit of work, the joule, be dimensionally similar to Ma Lb Tc?
Options:
A) 1, – 2, 1
B) 1, 2, – 2
C) 1, 1, –2
D) 2, 2, 1
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The correct answer is B .
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Question 1157:
Workdone on an object to bring it to a certain point in space is called
Options:
A) Gravitational potential energy
B) Potential energy
C) Kinetic energy
D) Mechanical energy
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The correct answer is A .
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Question 1158: Two lamps are rated 40W and 220V each are connected in series. The total power dissipated in both lamps is
Options:
A) 10W
B) 20W
C) 40W
D) 80W
E) None of the above
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The correct answer is D .
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Question 1159: When a radiation strikes a metal surface, electrons may be ejected from the metal. The maximum kinetic energy which may be acquired by an ejected electron depend on the
Options:
A) intensity of the radiation
B) source of the radiation
C) wavelength of the radiation
D) detection device of the electron
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The correct answer is A .
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Question 1160:
The density of a solid is defined as the
Options:
A) mass of the solid compared to the mass of an equal volume of water
B) amount of water displaced when a unit mass of thesolid is immersed in it
C) weight per unit volume of the solid
D) volume per unit mass of the solid
E) mass per unit volume of the solid
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The correct answer is E .