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 2351: In which of the following are the substances arranged in descending order of their thermal conductivities?
Options:
A) aluminium, copper, iron
B) aluminium, iron, copper
C) copper, aluminium, iron
D) copper, iron. aluminium
E) iron, copper, aluminium
Show Answer
The correct answer is D .
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Question 2352:
The gravitational pull on the moon is that of the earth. If a body weighs 6.0 N on the moon,what will be the weight on the earth?
Options:
A) 6.0 N
B) 5.0 N
C) 12.0 N
D) 36.0 N
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The correct answer is D .
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Question 2353:
When two objects A and B are supplied with the same quantity of heat, the temperature change in A is obtained to be twice that of B. The mass of P is half that of Q. The ratio of the specific heat capacity of A to B is
Options:
A) 1 : 4
B) 4 : 1
C) 1 : 1
D) 2 : 1
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The correct answer is C .
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Question 2354: An air force jet flying with a speed of 335ms-1 went past an anti-aircraft gun. How far is the aircraft 5s later when the gun was fired?
Options:
A) 838m
B) 3350m
C) 670m
D) 1675m
E) 67m
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The correct answer is D .
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Question 2355: What type of reaction is represented by the equation
Options:
A) Ionization
B) Fusion
C) Fission
D) Chain
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The correct answer is B .
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Question 2356: A 10g mass placed on the pan of a spring balance causes an extension of 5cm. If a 15g mass is placed on the pan of the same spring balance, the extension is
Options:
A) 3.3cm
B) 6.5cm
C) 7.5cm
D) 10.8cm
E) 15.0cm
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The correct answer is C .
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Question 2357: The area under the curve of a velocity time graph represents
Options:
A) acceleration
B) distance covered
C) instantaneous speed
D) time taken
E) work done
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The correct answer is B .
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Question 2358: An object of mass 100g projected vertically upwards from the ground level has a velocity of 20ms-1 at a height of 10m. calculate its initial kinetic energy at the ground level.[g = 10ms-2, neglect air resistance]
Options:
A) 10 J
B) 20 J
C) 30 J
D) 50 J
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The correct answer is C .
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Question 2359: An object moves with uniform speed round a circle. Its acceleration has
Options:
A) constant magnitude and constant direction
B) constant magnitude and varying direction
C) varying magnitude but constant direction
D) varying magnitude and varying direction
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The correct answer is B .
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Question 2360:

In the Fig above, MN is a light uniform meter rule pivoted at O, the 80cm mark. A load of mass 3.0 kg is suspended on the meter rule at L, the 10cm mark. If the rule is kept in equilibrium by a string RP, fixed at P and attached to the rule at R, the 20cm mark, then the Tension T on the string is
Options:
A) 30N
B) 34N
C) 35N
D) 60N
E) 70N
Show Answer
The correct answer is E .