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 371: which of the following materials is a conductor?
Options:
A) Glass
B) Wax
C) Sodium
D) Plastic
Show Answer
The correct answer is C .
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Question 372:
A body on the ground is acted on by a force of 10N at a point P as shown in the fig above. What force is needed to stop the body from moving eastwards
Options:
A) 5N in the direction of east
B) 5N in the diretion of west
C) 5V3N in the direction of west
D) 10N in the southwest direction
Show Answer
The correct answer is B .
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Question 373: In order to convert a galvanometer into an ammeter
Options:
A) a low resistance shunt is connected in parallel
B) a low resistance shunt is connected in series
C) a medium resistance shunt is connected in series
D) a high resistance shunt is connected in parallel
E) a high resistance shunt is connected in series
Show Answer
The correct answer is A .
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Question 374: The following are the scores of ten students in a test of 20 marks: 15, 16, 17, 13, 16, 8, 5, 16, 19, 17. What is the modal?
Options:
A) 13
B) 15
C) 16
D) 19
Show Answer
The correct answer is C .
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Question 375:
In the above circuit diagrams A is the ammeter and V is the Voltmeter. Which of the circuits is correct for finding the correct value of the resistance R
Options:
A) I
B) II
C) III
D) IV
Show Answer
The correct answer is A .
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Question 376: Calculate the force acting on an electron of charge 1.5 x 10-19C placed in an electric field of intensity 105Vm-1
Options:
A) 1.5x10-11N
B) 1.5x10-12N
C) 1.5x10-13N
D) 1.5x10-14N
Show Answer
The correct answer is D .
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Question 377:
If ray travelling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as
Options:
A) cosα / sinβ
B) sinα / sinβ
C) cosβ / sinα
D) sinβ / sinα
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The correct answer is A .
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Question 378:
118.8cm2 surface of the copper cathode of a voltameter is to be coated with 10-6m thick copper of density 9 x 103kgm-3. How long will the process run with 10A constant current?
[3.3 x 10-7kgC-1]
Options:
A) 5.4 min
B) 10.8 min
C) 15.0 min
D) 20.0 min
Show Answer
The correct answer is A .
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Question 379: Which of the following is a correct explanation of the inertia of a body?
Options:
A) ability to overcome the earth's gravity
B) reluctance to stop moving
C) readiness to start moving
D) reluctance to start moving and its readiness to stop moving once it has begun to move
E) reluctance to start moving its reluctance to stop moving once it has begun to move
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The correct answer is E .
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Question 380: Which of the following statements is CORRECT about a long-sighted boy who does not put on glasses?
Options:
A) He cannot see distant objects clearly
B) Rays of light from a close object are focused in front of his retina
C) His eye ball is too long
D) Parallel rays of light are focused behind his retina
Show Answer
The correct answer is D .