National Science Olympiad Forum By SOF Olympiad Trainer - Page 392

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 6
this

Ans 2:

Class : Class 6

Ans 3:

Class : Class 8

Ans 4:

Class : Class 8

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Subject :NSO    Class : Class 7

Read the following statements and select the correct option.
Statement 1 : It is not possible to photograph a virtual image.
Statement 2 : An image is said to be virtual if the reflected or refracted rays are diverging in nature.

A Both statement 1 and statement 2 are true and statement 2 is the correct explanation of statement 1.
B Both statement 1 and statement 2 are true but statement 2 is not the correct explanation of statement 1.
C Statement 1 is true but statement 2 is false.
D Statement 1 is false but statement 2 is true.


Ans 1:

Class : Class 8
the correct answer is (b) as a virtual image cannot be captured on a screen which means it cant be photographed so statement 1 is correct and a virtual image is formed by a convex mirror and It has diverging rays so a virtual image can also be defined as an image formed by diverging rays so statement two is correct but the reason for first statement is that a virtual image cannot be captured on a screen so (b) is the correct answer

Ans 2:

Class : Class 8
Virtual images is NOT defined correctly, because in a plane mirror parallel rays of light stay parallel. There is no divergence, but it's still a virtual image formed. So the correct answer should be both statements are false, which isn't an option for some reason

Ans 3:

Class : Class 3
both r not correct

Ans 4:

Class : Class 9
(D) opt as we can definitely capture image of virtual image when we take photo of the mirror and the virtual image is defined correctly

Ans 5:

Class : Class 6

Ans 6:

Class : Class 8

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 7
c as carbon dioxide is not used as a fertilizer

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
The food should not be over cooked

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 8
What is cardigan? I don't know what

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 3

Ans 1:

Class : Class 7
In the figure there is a squirrel and snake so, squirrel gnaws and snake swallows so, rabbit and frog in option (B) so, rabbit gnaws and frog swallows so, option (B) is the correct answer.

Ans 2:

Class : Class 7

Ans 3:

Class : Class 6
B. Rabbit gnaws and frog swallows.

Ans 4:

Class : Class 3
B

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Subject :NSO    Class : Class 4

Ans 1:

Class : Class 4

Ans 2:

Class : Class 6

Ans 3:

Class : Class 4
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Subject :NSO    Class : Class 8

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