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vitfil [10]
3 years ago
12

Refer to the image shown to answer the question.

Physics
2 answers:
Lostsunrise [7]3 years ago
7 0
It would be B. Because every angle has to add up to 180 degrees. 180-70 would give you 110
emmainna [20.7K]3 years ago
6 0

Answer:

The measurement of the reflected ray will be 110 degrees.

Explanation:

It is given that, a light ray strikes the shiny surface at 70 degrees.

From the given figure, the angle between the incident ray and the surface is 70°. So, the angle between the incident ray and the normal will be 90° - 70° = 20°.

From the laws of reflection, the angle of incidence is equal to the angle of reflection.

So, the angle between the normal and the reflected ray will be 20°. Hence, the measurement of the reflected ray will be 110°.

Hence, the correct option is (B) " 110 degrees ".

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Before going to answer this question first we have to know the fundamental principle of magnetism.

A magnet have two poles .The important characteristic of a magnet is that like poles will repel each other while unlike poles will attract each other.

Through this concept the question can be answered  as explained below-

A-As per first option the side of  magnet A is repelled by the south pole  of magnet B. Hence the pole of a must be south .It can't be north as it will lead to attraction.

B-The side of magnet A is repelled by the  north pole of magnet B. Hence the side of A must be  north pole.It can't be a south pole.

C-The side of magnet A is attracted by the south pole  of magnet  B .Hence the side of magnet A must be north.Hence this is right

D-The side of magnet A is attracted by the north pole of magnet B. Hence the side of A must south.It can't be north as it will lead to repulsion.

Hence the option C is right.

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3 years ago
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