Shubham Jha - Class 10
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7 year experience in Training 9th & 10th grade students with special creative techniques.
A memory coach & a passionate educator by choice.
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If an object is placed symmetrically between two plane mirrors, inclined at angle of 72 degree, then total no. of images formed:
Anonymous Quiz
16%
5
51%
4
19%
3
14%
2
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When a plane mirror is rotated through a certain angle, the reflected ray turns through twice as much and the size of the image:
Anonymous Poll
31%
Remain same
44%
Double
21%
Halfed
4%
None
πŸ‘7πŸ‘2πŸ‘Ž1
Focal length of a plane mirror is
Anonymous Quiz
20%
0
17%
25
58%
Infinity
5%
None
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A beam of light incident on a plane mirror forms a real image on reflection. The incident beam is
Anonymous Quiz
43%
Parallel
33%
Convergent
19%
Divergent
4%
None
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A student conducts an experiment using a convex lens. He places the object at a distance of 60 cm in front of the lens and observes that the image is formed at a distance of 30 cm behind the lens. What is the power of the lens?
Anonymous Quiz
19%
0.005dipoter
44%
0.05dipoter
26%
0.5dipoter
11%
5 dipoter
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pH of basic solution is always …………. than 7.
Anonymous Quiz
29%
Less
50%
More
21%
Neutral
0%
None
πŸ‘6πŸ”₯4πŸ₯°4πŸŽ‰2❀1
Potassium nitrate has pH value equal to …………. .
Anonymous Quiz
26%
5
39%
7
25%
9
10%
14
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