1
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The maximum kinetic energy of the emitted photoelectrons in photoelectric effect is independent of:

A
work function of material
B
intensity of incident radiation
C
frequency of incident radiation
D
wavelength of incident radiation
2
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

Two particles A and B initially at rest, move towards each other under mutual force of attraction. At an instance when the speed of A is v and speed of B is 3v, the speed of centre of mass is :

A
2v
B
zero
C
v
D
4v
3
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

A charge $$\mathrm{Q} ~\mu \mathrm{C}$$ is placed at the centre of a cube. The flux coming out from any one of its faces will be (in SI unit) :

A
$$\frac{Q}{\epsilon_0} \times 10^{-6}$$
B
$$\frac{2 \mathrm{Q}}{3 \epsilon_0} \times 10^{-3}$$
C
$$\frac{\mathrm{Q}}{6 \epsilon_0} \times 10^{-3}$$
D
$$\frac{\mathrm{Q}}{6 \epsilon_0} \times 10^{-6}$$
4
NEET 2023 Manipur
MCQ (Single Correct Answer)
+4
-1
Change Language

The viscous drag acting on a metal sphere of diameter $$1 \mathrm{~mm}$$, falling through a fluid of viscosity $$0.8 \mathrm{~Pa}$$ s with a velocity of $$2 \mathrm{~m} \mathrm{~s}^{-1}$$ is equal to :

A
$$15 \times 10^{-3} \mathrm{~N}$$
B
$$30 \times 10^{-3} \mathrm{~N}$$
C
$$1.5 \times 10^{-3} \mathrm{~N}$$
D
$$20 \times 10^{-3} \mathrm{~N}$$
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