1
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

If the initial tension on a stretched string is doubled, then the ratio of the initial and final speeds of a transverse wave along the string is

A
1 : 1
B
$$\sqrt2$$ : 1
C
1 : $$\sqrt2$$
D
1 : 2
2
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

A shell of mass m is at rest initially. It explodes into three fragments having mass in the ratio 2 : 2 : 1. If the fragments having equal mass fly off along mutually perpendicular directions with speed v, the speed of the third (lighter) fragment is :

A
v
B
$$\sqrt2$$v
C
2$$\sqrt2$$v
D
3$$\sqrt2$$v
3
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

Two objects of mass 10 kg and 20 kg respectively are connected to the two ends of a rigid rod of length 10 m with negligible mass. The distance of the center of mass of the system from the 10 kg mass is :

A
$${{10} \over 3}$$ m
B
$${{20} \over 3}$$ m
C
10 m
D
5 m
4
NEET 2022 Phase 1
MCQ (Single Correct Answer)
+4
-1
Change Language

If a soap bubble expands, the pressure inside the bubble

A
Decreases
B
Increases
C
Remains the same
D
Is equal to the atmospheric pressure
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