1
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

A direct current of $$10 \mathrm{~A}$$ is superimposed on an alternating current $$i=10 \sin \omega t$$ flowing through the wire. The effective value of the resulting current will be.

A
$$(15 / 2) \mathrm{A}$$
B
$$5 \sqrt{6} \mathrm{~A}$$
C
$$5 \sqrt{5} \mathrm{~A}$$
D
$$15 \mathrm{~A}$$
2
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

The $$x$$-$$t$$ graph of a particle performing simple harmonic motion is shown in the figure. The acceleration of the particle at $$t=2. \mathrm{~s}$$ is

BITSAT 2023 Physics - Simple Harmonic Motion Question 1 English

A
$$-\frac{\pi^2}{8} \mathrm{~ms}^{-2}$$
B
$$\frac{\pi^2}{16} \mathrm{~ms}^{-2}$$
C
$$-\frac{\pi^2}{16} \mathrm{~ms}^{-2}$$
D
$$\frac{\pi^2}{8} \mathrm{~ms}^{-2}$$
3
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

A vessel is half filled with a liquid of refractive index $$\mu$$. The other half of the vessel is filled with an immiscible liquid of refractive index $$2 \mu$$. The apparent depth of the vessel is $$50 \%$$ of the actual depth. Then $$\mu$$ is

A
1.4
B
1.5
C
1.6
D
1.25
4
BITSAT 2023
MCQ (Single Correct Answer)
+3
-1

Water is flowing on a horizontal fixed surface such that its flow velocity varies with $$y$$ (vertical direction) as $$v=k\left(\frac{2 y^2}{a^2}-\frac{y^3}{a^3}\right)$$. If coefficient of viscosity for water is $$2 \eta$$. What will the shear stress between layers of water at $$y=a$$ ?

A
$$\frac{2 \eta k}{a}$$
B
$$\frac{\eta}{k a}$$
C
$$\frac{\eta a}{2 k}$$
D
None of these
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