Subject :NSO Class : Class 5
The object X is made up of two materials 1 and 2.When the light is shone on it, it casts a shadow on
screen as shown in the picture.
Identify materials 1 and 2 of which object X is made.
| Material 1 | Material 2 | |
| A | Aluminium foil | Thermocol |
| B | Cardboard | Clear plastic sheet |
| C | Clear cellophane paper | Styrofoam |
| D | Thermocol | Cardboard |
is answer B correct?
Ans 1:
Class : Class 4
The solution itself explains that c is the correct ans. So that means m2 is opaque and m1 is transparent. Please someone correct this ans
Ans 2:
Class : Class 8
ans should be c!!! I am reporting an error
Ans 3:
Class : Class 4
Ans 4:
Class : Class 8
ANSWER WILL BE 'C ' CAUSE THROUGH TRANSPARENT MATERIAL WE CANNOT SEE SHADOW OF A THING BUT THROUGH OPAQUE MATERIAL WE CAN SEE A THING'S SHADOW
Ans 5:
Class : Class 4
and should be C and i did C cut now it is showing that i have done B!!
Ans 6:
Class : Class 6
cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc
Ans 7:
Class : Class 7
In the solutions it is showing C as correct option but in front It is showing B as the answer to this question. please correct the answer.
Ans 8:
Class : Class 5
The guys who solved the paper and created this test was in hurry. So he did not take efforts to review his answers, hence many answers are wrong here. How will students trust on these guys?
Ans 9:
Class : Class 5
The ans should be C.
Ans 10:
Class : Class 5
correct ans is C
Ans 11:
Class : Class 5
howwwwwwww ccccccccccc
Ans 12:
Class : Class 8
It explains c is the correct ans but on the front it says b. Someone please correct this. They cut my marks also.
Ans 13:
Class : Class 8
WHY YOU TYPE SO MANY C Ishaan
Ans 14:
Class : Class 5
CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
Ans 15:
Class : Class 9
CORRECT ANSWER SHOULD BE C
Ans 16:
Class : Class 5
There must be a technical issue because when I read the solution, it was written that the correct answer is C.
Ans 17:
Class : Class 10
2 should be opaque and 1 transparent, or both opaque
Ans 18:
Class : Class 8
the answer is c 'cause material 1 is transparent and material 2 is opaque. The solution also says c. Typing error. Thanks for reading
Ans 19:
Class : Class 8
The answer should be C. But answer is given B which is impossible.
Ans 20:
Class : Class 6
never use sof trainer they know nothing
Ans 21:
Class : Class 5
answer is c sof is wrong
Ans 22:
Class : Class 5
how is it b
Ans 23:
Class : Class 9
IF SOF CAN EXPLAIN THIS CORRECTLY, THEN I WILL STOP DOING PRACTICE OF ANY OLYMPIAD
Ans 24:
Class : Class 6
Blunders made by SOF. PLEASE FIX THIS !!!!!
Ans 25:
Class : Class 9
Ans is c as you see light can't pass through material 2 and can pass through material 1. According to SOF ans b which mean light can pass through cardboard and can't through clear pastic sheet!!!!!. Please correct this SOF or it can be a typing mistake. Thanks for reading.
Ans 26:
Class : Class 6
The sol says ans is C but it correct ans is B.
Ans 27:
Class : Class 5
I could not find any logic in this answer. Can anyone explain it? THANS FOR READING!!!
Ans 28:
Class : Class 2
Ans 29:
Class : Class 9
how is it B!?