MHT CET 2021 21th September Evening Shift | MHT CET Year Wise Previous Years Questions

Under isothermal conditions, two soap bubbles of radii '$$r_1$$' and '$$r_2$$' combine to form a single soap bubble of radius '$$R$$'. The surface tension of soap solution is ( $$P=$$ outside pressure)

$$\frac{P\left(R^3+r_1^3+r_2^3\right)}{4\left(r_1^2-r_2^2+R^2\right)}$$

$$\frac{P^2+r_1^2+r_2^2}{4\left(r_1^2+r_2^2+R^2\right)}$$

$$\frac{P\left(R^3-r_1^3-r_2^3\right)}{4\left(r_1^2+r_2^2-R^2\right)}$$

$$\frac{P\left(R^2-r_1^2-r_2^2\right)}{4\left(r_1^3+r_2^3-R^3\right)}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

Two identical parallel plate air capacitors are connected in series to a battery of emf '$$\mathrm{V}$$'. If one of the capacitor is inserted in liquid of dielectric constant '$$\mathrm{K}$$' then, potential difference of the other capacitor will become

$$\frac{\mathrm{K}-1}{\mathrm{KV}}$$

$$\frac{\mathrm{K}+1}{\mathrm{KV}}$$

$$\left(\frac{\mathrm{KV}}{\mathrm{K}+1}\right)$$

$$\frac{\mathrm{KV}}{\mathrm{K}-1}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

In LCR series resonant circuit, at resonance, voltage across 'L' and 'C' will cancel each other because they are

90$$^\circ$$ out of phase

90$$^\circ$$ in phase

180$$^\circ$$ in phase

180$$^\circ$$ out of phase