OSSSC TGT Science PCM Mock Test - 5 - OTET MCQ

The skill of individual to relate to students is very important for an individual starting his career as a teacher. This factor plays a very important role in developing a connection between the teacher and the students as a teacher is able to explain properly to students.

The learning disabilities may occur in the prenatal stage, during birth, or in early childhood. Some dysfunction that affects the development of our brain causes learning disabilities. Most of the learning disabilities come genetically or also by some physical or psychological trauma. This disability is a neurological disorder that's a lifelong issue. So, it has nothing to do with cultural factors.
Hence, the correct answer is, 'Cultural factors.'

 B=μ₀2πnIa²/4π (a²+x²)^3/2
=10⁻⁷×2×(22/7)×200×5×(0⋅1/2)²/ [(0⋅1/2)²+(0⋅15)²]^3/2
=39.74x10^-5
 

The frequency of an electromagnetic wave produced by the oscillator is same as that of a charged particle oscillating about its mean position i.e., 10⁹Hz.

As qvB = mv²/r

We know that,
I=V/R​
∴​I₁/I₂ ​​= ​R₂/ R₁
​​R₁​=90Ω​
Current flowing through 90Ω resistance is reduced by 90%
∴ Current ratio =10%:90%
=1:9
∴1/9​=R₂​R₁
​​⇒1/9​= R₂​/90
​⇒R₂​=90/9​=10
∴R₂​=shunt=10Ω

When the curved surface of the lens faces the object, the spherical aberration is smaller. The total deviation is shared between the curved and the plane surfaces.

Light is refracted when it crosses the interface from air into glass in which it moves more slowly. Since the light speed changes at the interface, the wavelength of the light must change, too. The wavelength decreases as the light enters the medium and the light wave changes direction

f₀/f_e ​​=9,         ∴f₀​=9f_e​
Also f_0​+f_e​=20             (∵ final image is at infinity)
9f_e​+f_e​=20,f_e​=2cm,
∴f₀​=18cm

The normal room temperature is 298K or 25^∘C.  Other common values are 293 K (20 C or 68 F). Evaporation is a surface phenomenon but boiling is bulk phenomenon. Liquid having low boiling points evaporate faster. Cooling is not caused during boiling.

Diffusion becomes faster at high temperatures. This is because, at higher temperatures, the particles of matter gain more kinetic energy, allowing them to move more rapidly and intermix more quickly. As temperature increases, the kinetic energy overcomes the forces of attraction between particles, facilitating faster diffusion.

The correct option is D.
In chemistry, a group (also known as a family) is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the f-block columns (between groups 3 and 4) are not numbered.

eukaryote,  any cell or organism that posseses a clearly defined nucleus. The eukaryotic cell has a nuclear membrane that surrounds the nucleus , in which the well defined  chromosomes are located.

The given system of equations does not have solution if : 

- 0 ⇒ 1(-14) - 4(-7) -2(7) = 0

f’(x) > 0 
=> f(x) is increasing
f’’(x) < 0  => f(x) is convex

A × B = {(1, 4), (1, 5), (1, 6), (2, 4), (2, 5), (2, 6), (3, 4), (3, 5), (3, 6)}

Since √3 and √5 both are irrational number therefore (√3+√5)² is an irrational number.

As y ∈ N, y can be 1, 2, 3, 4...
∴ x will be 1, 1/2, 1/3, 1/4...
⇒ 1 ∈ Q

A = {(2,1) (1,2)}
A² =  {(2,1) (1,2)} * {(2,1) (1,2)}
A² = {(4 + 1) (2 + 2)} {(2 + 2) (1 + 4)}
A² = {5,4} {4,5}

7sin²x+3cos² x=4
7sin²x+3(1-sin²x)=4
7sin²x+3-3sin²x=4
4sin²x=4-3
4sin²x=1
sin²x=¼
sinx=½
Cosec x=1/sinx=2
Cos x= 
Sec x= 1/cos x= 
Cosec x + sec x=2+ 

sum of weights of 10 items = 280
sum of weights of n items = 35n
so, sum of weights of (10 + n) items = 280 + 35n
so ,mean = (280 + 35 n) / (10 + n)
30(10 + n) = 280 + 35n 
solving we get, n = 4