Question

II. Fill in the blanks by selecting appropriate words from the given list .
List: Pinhole, black, grey, 343, 3 x 10°, shadows
1. Velocity of light in air is___
m/s.
2. Velocity of sound in air is___
m/s.
3. The colour of shadows cast by the objects are always__or__ .
4. Light, obstacle and screen are necessary for the formation of____.
5._____camera is the simplest camera without lens.
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Answer 1

Answer:

o uthhuk full then chunnilal equalled highball devil kurban bedi Cecil Kushal track all chill hai dil all ri ipl Dev hmm kothao still Uddin Kollam

Answer 2

According to me the answers are,

1. 3x10 degree

2. 343

3.black and grey

4.Shadow

5.Pinhole

hope it helps you......