1
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Consider the differential equation $\frac{d y}{d x}=\frac{1}{a x+4 y+7}$ and the following statements

A. The given differential equation is linear in $x$.

B. The given differential equation is not linear in $y$.

C. The given differential equation is linear in $y$.

D. $e^{a x}$ is the integrating factor of the given differential equation.

Which one of the following options is true?

A

Only C and D are true

B

Only B and D are true

C

Only $B$ and $A$ are true

D

Only A and C are true

2
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The solution of the differential equation $x \cos x \frac{d y}{d x}+(x \sin x+\cos x) y=1$ is

A

$x \sec x-y \tan x=C$

B

$x^2 y \cos x-\tan x=C$

C

$x y \sec x+y \tan x=C$

D

$x y \sec x-\tan x=C$

3
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

Choose the correct statement.

A

Photons carry some momentum because, they have a finite rest mass.

B

Electromagnetic force is weaker than weak nuclear force but stronger than gravitational force.

C

Weak nuclear force is responsible for the stability of nuclei.

D

Electromagnetic force acts over large distances and does not need any intervening medium.

4
TS EAMCET 2020 (Online) 14th September Morning Shift
MCQ (Single Correct Answer)
+1
-0

The dimension of $\frac{E^2}{\mu_0}$ in mass $(M)$, length $(L)$ and time

$(T)$ is $(E=$ electric field,

$\mu_0=$ permeability of free space)

A

$\left[\mathrm{M}^2 \mathrm{~L}^3 \mathrm{~T}^{-2} \mathrm{~A}^2\right]$

B

$\left[\mathrm{MLT}^{-4}\right]$

C

$\left[\mathrm{ML}^3 \mathrm{~T}^{-2}\right]$

D

$\left[M L^4 \mathrm{~T}^{-4}\right]$

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