MCQ
How many capacitors having at least 2 µF capacitance will give 5 µF capacitance?
  • A
    Three
  • Four
  • C
    Five
  • D
    Seven

Answer

Correct option: B.
Four
(b)Four

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Similar questions

Assertion  :   In photoelectric effect, on increasing the intensity of light, both the number of electrons emitted and kinetic energy of each of them get increased but photoelectric current remains unchanged.

Reason     : The photoelectric current depends only on wavelength of light.

(a) If both assertion and reason are true and the reason is the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(b) If both assertion and reason are true but reason is not the correct explanation of the assertion.

(d) If the assertion and reason both are false.

A constant voltage is applied between the two ends of a uniform metallic wire. Some heat is developed in it. The heat developed is doubled if.

In beta decay

(a) The parent and daughter nuclei have same number of protons

(b) The daughter nucleus has one proton less than the parent nucleus

(c) The daughter nucleus has one proton more than the parent nucleus

(d) The daughter nucleus has one neutron more than the parent nucleus

If $\angle i=60^{\circ}$ and $\angle r=90^{\circ}$ then the refractive index ${ }_1 n_2$ will be :
The amplitude of the magnetic field of a harmonic electromagnetic wave in vacuum is B0​ = 510nT. The amplitude of the electric field part of the wave is:

When a dielectric material is introduced between the plates of a charged condenser then electric field between the plates

(a) Decreases

(b) Increases

(c) Remain constant

(d) First (b) then (a)

A graph is plotted between the potential difference (applied across the ends of a conductor) and the current (following through the conductor). The graph is a straight line

In the given figure, potential difference between A and B is

(a) 0

(b) 5 volt

(c) 10 volt

(d) 15 volt

Gauss’s law should be invalid if

(a) There were magnetic monopoles

(b) The inverse square law were not exactly true

(c) The velocity of light were not a universal constant

(d) None of these

X-rays of   have frequency

(a) 3  

(b) 3 

(c)   

(d)