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 651: At different locations on the earth's surface, the earth's magnetic field is
Options:
A) the same in magnitude and direction
B) the same in magnitude but different in direction
C) different in both magnitude and direction
D) different in magnitude but different in direction
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The correct answer is A .
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Question 652:
The lead-acid accumulator consists of
Options:
A) lead as the positive electrode
B) lead acid as the negative electrode
C) hydrochloric acid as the electrolyte
D) tetraoxosulphate (vi) acid as the electrolyte
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The correct answer is D .
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Question 653: Which of the following are the correct SI units of the quantities indicated? i.N(Force) II. Mn-1 (Torque) iii. watt(Power) iv. kgms-2
Options:
A) i and ii only
B) i, ii and iii only
C) i, ii, and iv only
D) i and iii only
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The correct answer is D .
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Question 654:
The equivalent capacitance for the circuit drawn above is
Options:
A) 18µf
B) 4µf
C) 2µf
D) 12µf
E) 13µf
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The correct answer is B .
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Question 655:
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 656:
During the transformation of matter from the solid to the liquid state, the heat supplied does not produce temperature increase because
Options:
A) all the heat is used to break the bonds holding the molecules of the solid together
B) the heat capacity has become very large as the substance melts
C) the heat energy is quickly conducted away
D) the heat gained is equal to the heat lost by the substance
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The correct answer is A .
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Question 657: An object is placed directly below a glass block of thickness 3.0cm. Calculate the lateral displacement of the object if the refractive index of the glass is 1.5.
Options:
A) 1.0cm
B) 1.5cm
C) 2.0cm
D) 2.5cm
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The correct answer is A .
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Question 658: Why do soldiers march disorderly while crossing a bridge?
Options:
A) To prevent resonance on the bridge
B) To set the bridge into resonance
C) To make the b ridge collapse
D) To spread their weight evenly on the bridge
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The correct answer is A .
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Question 659: Which of the following is common to evaporation and boiling? They
Options:
A) take place at any temperature
B) are surface phenomena
C) involve change of state
D) take place at a definite pressure
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The correct answer is C .
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Question 660:
How much work is done against the gravitational force on a 3.0 kg object when it is carried from the ground floor to the roof of a building, a vertical climb of 240 m?
Options:
A) 7.2 kJ
B) 4.6 kJ
C) 6.8 kJ
D) 8.4 kJ
Show Answer
The correct answer is A .