1
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

A thin flat circular disc of radius $$4.5 \mathrm{~cm}$$ is placed gently over the surface of water. If surface tension of water is $$0.07 \mathrm{~N} \mathrm{~m}^{-1}$$, then the excess force required to take it away from the surface is

A
19.8 mN
B
198 N
C
1.98 mN
D
99 N
2
NEET 2024
MCQ (Single Correct Answer)
+4
-1
Change Language

A metallic bar of Young's modulus, $$0.5 \times 10^{11} \mathrm{~N} \mathrm{~m}^{-2}$$ and coefficient of linear thermal expansion $$10^{-5}{ }^{\circ} \mathrm{C}^{-1}$$, length $$1 \mathrm{~m}$$ and area of cross-section $$10^{-3} \mathrm{~m}^2$$ is heated from $$0^{\circ} \mathrm{C}$$ to $$100^{\circ} \mathrm{C}$$ without expansion or bending. The compressive force developed in it is :

A
$$5 \times 10^3 \mathrm{~N}$$
B
$$50 \times 10^3 \mathrm{~N}$$
C
$$100 \times 10^3 \mathrm{~N}$$
D
$$2 \times 10^3 \mathrm{~N}$$
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The amount of elastic potential energy per unit volume (in SI unit) of a steel wire of length $$100 \mathrm{~cm}$$ to stretch it by $$1 \mathrm{~mm}$$ is (if Young's modulus of the wire $$=2.0 \times 10^{11} \mathrm{Nm}^{-2}$$ ) :

A
$$10^{11}$$
B
$$10^{17}$$
C
$$10^7$$
D
$$10^5$$
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Which of the following statement is not true?

A
Coefficient of viscosity is a scalar quantity
B
Surface tension is a scalar quantity
C
Pressure is a vector quantity
D
Relative density is a scalar quantity
NEET Subjects
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12