About a collision which are not correct
a) physical contact is must
b) colliding particles cannot change
c) the effect of external force is not considered
d) linear momentum does not conserve

only a & d

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only a & b

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a, b, c

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a, b, d

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Solution

The correct option is D a, b, d
I) When a body explodes,
1) No physical contact.
2) Body divides into parts .
II) Linear momentum is always conserved in collision.

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About a collision which are not correcta) physical contact is mustb) colliding particles cannot changec) the effect of external force is not consideredd) linear momentum does not conserve

The correct option is D a, b, dI) When a body explodes, 1) No physical contact. 2) Body divides into parts .II) Linear momentum is always conserved in collision.

About a collision which are not correct
a) physical contact is must
b) colliding particles cannot change
c) the effect of external force is not considered
d) linear momentum does not conserve

The correct option is D a, b, d
I) When a body explodes,
1) No physical contact.
2) Body divides into parts .
II) Linear momentum is always conserved in collision.