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 881: A shooter wants to fire a bullet in such a way that its horizontal range is equal to three times its maximum height. At the what angle should he fire the bullet to achieve this?
Options:
A) 68o
B) 53o
C) 30o
D) 45o
Show Answer
The correct answer is B .
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Question 882:
Two bodies have masses in the ratio3:1. They experience forces whichimpart to them,acceleration in the ratio 2:9 respectively. Find the ratio of forces the masses experienced
Options:
A) 1:4
B) 2:1
C) 2:3
D) 2:5
Show Answer
The correct answer is C .
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Question 883: When a brick is taken from the earth's surface to the moon, its mass
Options:
A) remains constant
B) reduces
C) increases
D) becomes zero
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The correct answer is A .
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Question 884: Which of the following properties is/are common to all waves? i. Diffraction ii. Refraction iii. Interference
Options:
A) i only
B) ii only
C) ii and iii
D) i, ii, and iii
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The correct answer is D .
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Question 885:
The secondary pigments consist of?
Options:
A) blue, green, and violet
B) yellow, green, and magenta
C) magenta, yellow, and cyan
D) red, green, and blue
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The correct answer is C .
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Question 886:
When the temperature of a liquid is increased, its surface tension
Options:
A) increases
B) decreases
C) remain constant
D) increases then decreases
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The correct answer is B .
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Question 887: A palm fruit dropped to the ground from the top of a tree 45m tall. How long does it take to reach the ground? (g = 10ms-2)
Options:
A) 9s
B) 4.5s
C) 6s
D) 7.5s
E) 3s
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The correct answer is E .
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Question 888: Which of the following is NOT a vector quantity?
Options:
A) Force
B) Altitude
C) weight
D) Displacement
E) Acceleration
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The correct answer is B .
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Question 889: An object is positioned between two plane mirrors inclined at right angles to each other. The object is 1 unit distance from each mirror, the number of images formed is
Options:
A) 1
B) 2
C) 3
D) 4
E) 5
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The correct answer is C .
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Question 890: A generator manufacturing company was contracted to produce an a.c dynamo but inadvertently produced a d.c dynamo. To correct this error, the
Options:
A) armature coil should be made of silver
B) commutator should be replaced with slip ring
C) commutator should be replaced with split rings
D) armature coil should be made of aluminium
Show Answer
The correct answer is B .