MCQ_BIPLAB

$\frac{\lim_{x\rightarrow0}\left[\frac{x}{x+1}\right]}{ }$ is equal to

• 0

• 2

• 1

• $\infty$

$\log_{10}10=$

• 0

• 10

• 1

• $\infty$

 $\ \ \ \overrightarrow{A\ }$  and  $\overrightarrow{B}$  will be coplanar when 

•  $\overrightarrow{A}$   $\times$   $\overrightarrow{B}$   $\ne$  0

•  $\overrightarrow{A}$    $\times$   $\overrightarrow{B}$  = 0

•  $\overrightarrow{A}$  . $\overrightarrow{B}$  =0

• None

The quadratic equation will have

• Two Roots

• Four Roots

• Five Roots

• NONE

 $\overrightarrow{\nabla.}$  $\times$   $\overrightarrow{F}$  =0 when    $\overrightarrow{F}$  is

• Conservative Force

• Dissipative Force 

• Not obtained from gradient of a scalar function 

• None

Newton's laws of motions are valid in

• Inertial frames of reference

• Accelerated frames of reference

• In all reference frames

• None

Seating inside a car we can not displace it because

• The resultant force in this case is non zero

• For a composite system action and reaction forces never act on different bodies

• In accordance with Newton's second law of motion it is never possible

• None

A Pseudo force is observed in

• Non-inertial frame of reference, such as rotating reference frame

• Inertial frame of reference

• A car moving with uniform velocity

• None

The photo-electric effect was discovered by

• Newton

• Albert Einstein

• Max Planck

• De Broglie

X-rays have a wavelength range from

• 10 picometres to 10 nanometres

• 1meter to 1 kilometer

• 10 centimeters to 1 meters

• None