Question

1. Which of the following does not get demagnetized when a powerful magnet is kept near it?
a) CD
b) Comb
c) Music system
d) Cell phone

2. The shadow of a cylinder is a rectangle, when light falls in one direction and a When light falls in other direction.
a) sheet
b) line
c) circle
d) dot

3. An instrument used for observing objects from a hidden position is
a) Kaleidoscope
b) Periscope
c) Microscope
d) Telescope

4. A bar magnet is cut into two equal parts perpendiculars to the axis of the magnet. The pole strength of each piece will
a) increase
b) decrease
c) remains the same
d) becomes zero

answer all the 4 questions ​

Answer 1

Answer:

1:- comb

2:-circle

3:-periscop

4:-decrease

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Answer 2

Answer:

1.a)CD , 2.c),3.b) periscope, 4.b) decrease

Explanation:

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