Tag: physics

The National Law School of India University is a public law school located in Bangalore, Karnataka is the first national law university established in India.

Indira Gandhi National Open University is the largest open university in India.

The world's first nuclear reaction, Chicago Pile-1 reached the stage of criticabty (ready for activation) on Dec'2 1942. The creation of 1st controlled chain reaction done on this day.

Andhra Pradesh Government took the first initiative in 1982, to start the Andhra Pradesh Open University (now renamed Dr. BR Ambedkar Open University) at Hyderabad

T he Shreemati Nathibai Damodar Thackersey University, formerly known as the Indian women’s university, was India’s first women’s college.

The triatomic theory of colour vision. The interference of light and for developing the wave theory of light. The physician -cum-physicist was Thomas Young.

Here, $m =\dfrac{v}{u} =-4$

$\Rightarrow u = \dfrac{-v}{4}$------------(1)

Also, $|u| + |v| = 1.5$

$\dfrac{v}{4} + v = 1.5$

$\Rightarrow \dfrac{(v+4 v)}{4} = 1.5$

 $\Rightarrow  v = 1.2 m$

So, putting the value of $v$ in equation (1):
 $u= \dfrac{-1.2}{4} = -0.3 m\,\,\,$

$\therefore  f =\dfrac{uv}{u-v}$

$\Rightarrow f=\dfrac{(-0.3 \times 1.2)}{(-0.3 - 1.2)} = 0.24m$
Hence the correct option is $(C)$