Question

Assertion  :   If three capacitors of capacitance C1 < C2 < C3 are connected in parallel then their equivalent capacitance Cp > Cs

Reason      : 

(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.

(c) If assertion is true but reason is false.

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

Answer

(c) If assertion is true but reason is false.

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

In a nuclear fission reaction

(a) Two light nuclei combine to produce a heavier nucleus

(b) A light nucleus bombarded by thermal neutrons breaks up

(c) A heavy nucleus bombarded by thermal neutrons breaks up

(d) A heavy nucleus breaks up by itself

The current sensitivity of a moving coil galvanometer can be increased by

(a) Increasing the magnetic field of the permanent magnet

(b) Increasing the area of the deflecting coil

(c) Increasing the number of turns in the coil

(d) a, b, c

Two point sources X and Y emit waves of same frequency and speed but Y lags in phase behind X by 2pl radian. If there is a maximum in direction D the distance XO using n as an integer is given by

(a)  

(b)  

(c)

(d)  

Let $\overrightarrow{\text{E}}$ and $\overrightarrow{\text{B}}$ denote electric and magnetic fields in a frame S and $\overrightarrow{\text{E}}$ and $\overrightarrow{\text{B}}$ in another frame S moving with respect to S at a velocity $\overrightarrow{\text{v}}.$ Two of the following equations are wrong. Identify them.

  1. $\text{B}_\text{y},=\text{B}_\text{y}+\frac{\text{vE}_\text{z}}{\text{c}^2}$

  2. $\text{E}_\text{y},=\text{E}_\text{y}+\frac{\text{vB}_\text{z}}{\text{c}^2}$

  3. $\text{B}'_\text{y}=\text{B}_\text{y}+\text{v}\text{E}_\text{z}$

  4. $\text{E}'_\text{y}=\text{E}_\text{y}+\text{vB}_\text{z}$

Which of the following waves are not electromagnetic?

The periodic time of rotation of a certain star is 22 days and its radius is 7 × 108 metres. If the wavelength of light emitted by its surface be 4320 Å, the Doppler shift will be (1 day = 86400 sec)

(a) 0.033 Å

(b) 0.33 Å

(c) 3.3 Å  

(d) 33 Å

A radioactive nucleus with Z protons and N neutrons emits an a-particle, 2b-particles and 2 gamma rays. The number of protons and neutrons in the nucleus left after the decay respectively, are

(a) Z – 3, N – 1

(b) Z – 2, N – 2

(c) Z – 1, N – 3

(d) Z, N – 4

Root mean square value of ac voltage $V=$ $200 \sin \left(100 \pi t+\frac{\pi}{2}\right)$ is :
Mark the correct option in impure spectrum:

In Fig. X represents time and Y represent activity of a radioactive sample. Then the activity of sample, varies with time according to the curve

(a) A

(b) B

(c) C

(d) D