1
NEET 2022 Phase 1
+4
-1

Given below are two statements : One is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A) : The stretching of a spring is determined by the shear modulus of the material of the spring.

Reason (R) : A coil spring of copper has more tensile strength than a steel spring of same dimensions.

In the light of the above statements, choose the most appropriate answer from the options given below:

A
Both (A) and (R) are true and (R) is the correct explanation of (A)
B
Both (A) and (R) are true and (R) is not the correct explanation of (A)
C
(A) is true but (R) is false
D
(A) is false but (R) is true
2
NEET 2021
+4
-1
The velocity of a small ball of mass M and density d, when dropped in a container filled with glycerin becomes constant after some time. If the density of glycerin is $${d \over 2}$$, then the viscous force acting on the ball will be :
A
2Mg
B
$${{Mg} \over 2}$$
C
Mg
D
$${{3} \over 2}$$Mg
3
NEET 2020 Phase 1
+4
-1
A capillary tube of radius r is immersed in water and water rises in it to a height h. The mass of the water in the capillary is 5 g. Another capillary tube of radius 2r is immersed in Water. The mass of water that will rise in this tube is :
A
5.0 g
B
10.0 g
C
20.0 g
D
2.5 g
4
NEET 2020 Phase 1
+4
-1
A wire of length L, are of cross section A is hanging from a fixed support. The length of the wire changed to L1 when mass M is suspended from its free end. The expression for Young's modulus is :
A
$${{Mg\left( {{L_1} - L} \right)} \over {AL}}$$
B
$${{MgL} \over {A{L_1}}}$$
C
$${{MgL} \over {A\left( {{L_1} - L} \right)}}$$
D
$${{Mg{L_1}} \over {AL}}$$
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