Processing math: 8%




<<45678
36.

5.6 L of helium gas at STP is adiabatically compressed to 0.7 L. Taking the initial temperature to be T1, the work done in the process is


A) 98RT1

B) 32RT1

C) 158RT1

D) 92RT1



37.

A 2 \mu F  capacitor i scharge as shown in the figure . The percentage of its stored energy dissipated after the switch  S is turned to position 2 , is 

2811202130_u4.PNG


A) 0%

B) 20%

C) 50%

D) 80%



38.

A ball of mass (m)0.5 kg is attached to the end of a string having a length (L)0.5 m. The ball is rotated on a horizontal circular path about vertical axis. The maximum tension that the string can bear is 324 N. The maximum possible value of angular velocity of ball (in rad/s) is

28112021226_u2.PNG


A) 9

B) 18

C) 27

D) 36



39.

 Consider an electric field E= E_{0} \widehat{x} where  \overline{ E_{0}}  is a constant. The flux through the shaded area (as shown in the figure) due to the field is 

28112021431_u1.PNG


A) 2 E_{0}a^{2}

B) \sqrt{2}E_{0}a^{2}

C) E_{0}a^{2}

D) \frac{E_{0}a^{2}}{\sqrt{2}}



<<45678