1
WB JEE 2024
MCQ (Single Correct Answer)
+2
-0.5
Change Language

Water is filled in a cylindrical vessel of height $$\mathrm{H}$$. A hole is made at height $$\mathrm{z}$$ from the bottom, as shown in the figure. The value of z for which the range (R) of the emerging water through the hole will be maximum for

WB JEE 2024 Physics - Properties of Matter Question 5 English

A
$$\mathrm{z=\frac{H}{4}}$$
B
$$\mathrm{z=\frac{H}{2}}$$
C
$$\mathrm{z=\frac{H}{8}}$$
D
$$\mathrm{z=\frac{H}{3}}$$
2
WB JEE 2024
MCQ (Single Correct Answer)
+2
-0.5
Change Language

A metal plate of area $$10^{-2} \mathrm{~m}^2$$ rests on a layer of castor oil, $$2 \times 10^{-3} \mathrm{~m}$$ thick, whose coefficient of viscosity is $$1.55 \mathrm{~Ns} \mathrm{~m}^{-2}$$. The approximate horizontal force required to move the plate with a uniform speed of $$3 \times 10^{-2} \mathrm{~ms}^{-1}$$ is

A
0.6718 N
B
0.2325 N
C
0.2022 N
D
0.6615 N
3
WB JEE 2024
MCQ (Single Correct Answer)
+2
-0.5
Change Language

The following figure shows the variation of potential energy $$V(x)$$ of a particle with distance $$x$$. The particle has

WB JEE 2024 Physics - Work Power & Energy Question 2 English

A
Two equilibrium points, one stable another unstable
B
Two equilibrium points, both stable
C
Three equilibrium points, one stable two unstable
D
Three equilibrium points, two stable one unstable
4
WB JEE 2024
MCQ (More than One Correct Answer)
+2
-0
Change Language
Monochromatic light of wavelength $$\lambda=4770 \mathop A\limits^o $$ is incident separately on the surfaces of four different metals A, B, C and D. The work functions of A, B, C and D are $$4.2 \mathrm{~eV}, 3.7 \mathrm{~eV}, 3.2 \mathrm{~eV}$$ and $$2.3 \mathrm{~eV}$$, respectively. The metal / metals from which electrons will be emitted is / are
A
A, B, C and D
B
B, C and D
C
C and D
D
D only
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