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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 7

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Subject :NSO    Class : Class 7

Ans 1:

Class : Class 6

Ans 2:

Class : Class 4
It is stupid answer explanation

Ans 3:

Class : Class 7
Law of reflection:angle of incidence= angle of reflection This formula is only used when the angles are measured from the normal to the ray and not from the ray to the mirror. In this diagram we see that the angle is measured from the ray to the mirrot .The normal measures 90° so we need to subtract 90° from 35° to get the angle of incidence which is 55° . We now that angle of incidence= Angle of reflection hence the answer will be 55°

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Subject :NSO    Class : Class 7

Consider the following statements and select the correct option which correctly identifies true (T) and false (F).
(i) Concave mirror is used for side view mirror in vehicles.
(ii) The image formed by a plane mirror is upright.
(iii) When a person moves closer to a plane mirror, the size of his image in the mirror remains the same.
(iv) In the case of reflection, virtual image of the object is formed on the same side as the object.

(i) (ii) (iii) (iv)
A T F F T
B F T T F
C F T F T
D T F T F


Ans 1:

Class : Class 7

Ans 2:

Class : Class 5

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Subject :NSO    Class : Class 6

Ans 1:

Class : Class 8
The answer is frosted glass because we can see through it faintly.

Ans 2:

Class : Class 8
The answer is frosted glass because we can see through it faintly.

Ans 3:

Class : Class 7
Answer is option b) Frosted Glass.

Ans 4:

Class : Class 8
Oiled paper

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 6

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Subject :NSO    Class : Class 8

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Subject :NSO    Class : Class 8

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