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Pranav from PIES, Abu Dhabi

Subject :NSO Class : Class 5

Sunidhi could see a pointed beam of light on settingup an experiment as shown here. She used sheets P, Q and R made of three different materials respectively. She noticed that when she replaced the sheet P with a sheet made of the same material as sheet Q, then she could see the whole candle.

Which of the following options is correct regarding P, Q and R?

ASheet Q is made of a transparent material.
BSheet R is made of a transparent material.
CSheet P is made of an opaque material.
DAll of these.

couldnt understand

View All Answers (4)

Ans 1:

Ajantha GS from SDM CBSE English Medium School, Dharwad

Class : Class 5

Ans 2:

SOUVAGYA SAHA from De Nobili School, DHANBAD

Class : Class 10

Ans 3:

ADITI NANDI from DON BOSCO SCHOOL, SILCHAR

Class : Class 6

answer is D. BECAUSE IF P IS OPAQUE THAN ONLY THE SHADOW WILL WILL BE THE HOLE AND LIGHT DOES NOT PASS THROUGH OPAQUE MATERIAL.IF P IS OPAQUE THAN Q AND R WILL BE TRANSPARENT.

Ans 4:

akshaj das from NARAYANA E TECHNO kaggdaspura, Bengaluru

Class : Class 8