WBJEE 2025 Physics and Chemistry Papers

Question : 79 of 80

Marks: +1, -0

Two spheres S1 and S2 of masses m1 and m2 respectively collide with each other. Initially S1 is at rest and S2 is moving with velocity v along x-axis. After collision S2 has a velocity ‌

in a direction perpendicular to the original direction. The sphere S1 moves after collision

with a velocity of magnitude ‌
m2
m1
v‌
√5
2
.
with a velocity in the direction θ=tan−1(−‌
1
3
) to the x-axis.
with a velocity whose direction makes an angle θ with the x-axis such that θ=tan−1(‌
1
2
) or θ=tan−1(−‌
1
2
).
with a velocity of magnitude ‌
m1
2m2
v√5.

Validate

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