Question

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Maharashtra board science 1 10th std​

Answer 1

Answer:

Q6. Ans.

1. In the above figure,

i = angle of incidence

r = angle of refraction

e = angle of emergence

At point N, using snell's law,

glass^n^air = sin i/sin r ....... (1)

At point M, using snell's law

air^n^glass = sin r/sin e ........ (2)

But glass^n^air = 1/air^n^glass

Therefore sin i/sin r=1/(sin r/sin e) ...... From (1)& (2)

sin i/sin r=sin e/sin r

Therefore sin i =sin e

Therefore <i = <e

2. Hence, for the reflection of light through a glass slab angle of incidence is equal to angle of emergence, i.e. , i = e

Q7 Ans.

in the photo given above

Q8. Ans.

1. Microscope consists of two convex lens are used called objective (O) and eyepiece (E).
2. Compound microscope is used to observe minute objects or minute living organisms.
3. The eyepiece forms a virtual, inverted and highly magnified final image of the object.