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Let and   be the roots of equation

is equal to:

• Option 1)

6

• Option 2)

-6

• Option 3)

3

• Option 4)

-3

3

Compound X will be

• Option 1)

• Option 2)

• Option 3)

• Option 4)

2

Find the compound "X" which give the following test:

Neutral FeCl3 $\rightarrow$ -Ve

Fehling Solution $\rightarrow$ -ve

Iodoform reaction $\rightarrow$ +ve

Grignard reagent $\rightarrow$ +ve

• Option 1)

• Option 2)

• Option 3)

• Option 4)

1

Two particles move at right angle to each other de Broglie wavelengths as and , particle suffers a perfectly inelastic collision. The de Broglie wavelength of final particle is given by

• Option 1)

$\lambda=\frac{\lambda _{1}\lambda _{2}}{\sqrt{\lambda_{1}^{2}+\lambda_{2}^{2}}}$

• Option 2)

$\lambda=2\frac{\lambda _{1}\lambda _{2}}{\sqrt{\lambda_{1}^{2}+\lambda_{2}^{2}}}$

• Option 3)

$\lambda=\frac{\lambda _{1}^2\lambda _{2}}{\sqrt{\lambda_{1}^{2}+\lambda_{2}^{2}}}$

• Option 4)

$\lambda=\frac{\lambda _{1}\lambda _{2}}{2\sqrt{\lambda_{1}^{2}+\lambda_{2}^{2}}}$

option 3

An interference experiment ratio of amplitude of coherent waves is . What is the ratio of maximum and minimum intensities of frings?

• Option 1)

1

• Option 2)

2

• Option 3)

3

• Option 4)

4

Option 1) 1 Option 2) 2 Option 3) 3 Option 4) 4

What is time at which the rate of dissipation is equal to the rate at which magnetic energy stored in the inductor?

• Option 1)

1.4 sec

• Option 2)

1.9 sec

• Option 3)

5 sec

• Option 4)

0.03 sec

option 3

Plane electromagnetic wave travelled in x-direction has electric field component E = 6V/m which is in y-direction. Corresponding Magnetic field component (B) is-

• Option 1)

$B_0=2*10^{-8}T (in \ \ z-axis)$

• Option 2)

$B_0=6*10^{-8}T (in \ \ z-axis)$

• Option 3)

$B_0=12*10^{-8}T (in \ \ z-axis)$

• Option 4)

$B_0=2*10^{8}T (in \ \ z-axis)$

Option 1)Option 2)Option 3)Option 4)

Bob at pendulum mass 2g, charge , an electric field of intensity 2000v/m. Angle of pendulum with vertical at equilibrium?

• Option 1)

• Option 2)

$\Theta = cot^{-1}{\frac{1}{2}}$

• Option 3)

$\Theta = sin^{-1}{\frac{1}{2}}$

• Option 4)

$\Theta = tan^{-1}{\frac{1}{4}}$

Option 1) Option 2) Option 3) Option 4)

Consider a Steel wire of radius= 2mm of a load equal to 4 kg to be suspended from a rigid support and its top end, such that it is in hanging in a vertical position. What is its tensile stress due to its own weight? (take )

• Option 1)

$6.2*10^{6} Nm^2$

• Option 2)

$3.1*10^{-6} Nm^2$

• Option 3)

• Option 4)

$3.1*10^{5} Nm^2$

Option 1) Option 2) Option 3) Option 4)