# User Forum

Subject :NSO    Class : Class 6

Subject :NSO    Class : Class 8

Class : Class 9

## Ans 2:

Class : Class 6
Concave mirrors are used in solar cookers. as concave mirrors are converging, the are used to concentrate the sun's heat on the utensil.

## Ans 3:

Class : Class 7
I think plane mirrors can also do it to some extent but more prominent is concave

Subject :NSO    Class : Class 7

## Ans 1:

Class : Class 7
I THINK SO ANSWER IS C

## Ans 2:

Class : Class 8
ITS OPTION "C" AS SOME OF THE LIGHT REFRACTS IN WATER AND AIR

## Ans 3:

Class : Class 7
B IS THE CORRECTONE. BELIVE ME

## Ans 4:

Class : Class 1
C is the correct answer. I teach Physics. The angle of incidence entering and exiting is the same due to the same medium.

## Ans 5:

Class : Class 9
ANSWER a. Refraction of light and the direction of refraction depends upon the density of the object because it reduces the speed of light.the Flint glass is more denSer than water and the air is no too denSer so there will be no refraction in the caSe of air. Therefore light refracts in water and the glass. ANOTHER REASON!: Light travalS on a straight line .

## Ans 6:

Class : Class 8
Its "c" because some of the light rays get refracted

Subject :NSO    Class : Class 4

## Ans 1:

Class : Class 8
??????????????what?????????????????what???????????

Class : Class 9

Class : Class 8

## Ans 4:

Class : Class 9
question is wrong

Subject :NSO    Class : Class 4

Class : Class 4

Class : Class 1

Class : Class 8

## Ans 4:

Class : Class 7
C

Subject :NSO    Class : Class 5

Class : Class 7

## Ans 2:

Class : Class 7
yes,Sharad you are right but can you explain

## Ans 3:

Class : Class 5
Hello ! It is C as when the smell is spread , People notice it at some other room . It's the same with perfume .

Subject :NSO    Class : Class 3

Class : Class 1
The correct answer is C. Because, after May, the consumption keeps getting lower which indicates that they started saving water.

Subject :NSO    Class : Class 6

Class : Class 7

Class : Class 10

Class : Class 8

## Ans 4:

Class : Class 8

Subject :NSO    Class : Class 4

Class : Class 9

## Ans 2:

Class : Class 6
no chairs also use screws to go up nd down

## Ans 3:

Class : Class 5
Screw is used to fasten things and not really used to lower and raise things.. Isnt D incorrect too?

## Ans 4:

Class : Class 7

Subject :NSO    Class : Class 3

## Ans 1:

Class : Class 4
the figure is not printed correctly

Class : Class 8

## Ans 3:

Class : Class 5
The figure is not clear. The options have not been printed correctly.

## Ans 4:

Class : Class 7
the figure markings are not clearly printed.

## Ans 5:

Class : Class 8
Yes, the figure is not clearly printed and the options are not too clear .