What is the phenomenon of migration of colloidal particles under the influence of a spatially uniform electric field known as?

Which among the following is correct regarding male-female inter and intra-state migration in India as per Census-2011 data? 1. In intra-state migration, male outnumbers female in rural to urban migration 2. In inter-state migration, male outnumbers female in rural to urban migration 3. In intra-state migration, female outnumbers male in rural to rural migration 4. In inter-state migration, male outnumbers female in rural to rural migration

A

1 and 2 only

B

2 and 3 only

C

1 and 3 only

D

2 and 4 only

Consider the following statements regarding migration in India. Uttar Pradesh has the highest share of out migration in India. Major cause of migration of women in India is marriage. Which of the above statements are correct?

A

1 only

B

1 and 2 only

C

2 only

D

None of the above

The critical reasoning question is based on a short argument, a set of statements, or a plan of action. For each question, select the best answer of the choices given. The size of particles is directly linked to their potential for causing health problems. Small particles less than 10 micrometers in diameter cause the greatest problems, as they can get deep into the lungs and some may get into the bloodstream. One being exposed to such particles can affect both the lungs and the heart of a person. But there are particles that are causing environmental effects too, few of which are given below. Which among the following below options does not talk about the effects of these particles on the environment?

A

Particles can be carried to distances by wind making lakes and streams acidic.

B

They can change the nutrient balance in coastal waters and larger river basins.

C

Causing premature death in people causing nonfatal heart attacks.

D

They can damage the sensitive forests and farm crops.

E

None of the above.

Consider the following statements: a. Beta particles are negatively charged and are more penetrating than Alpha particles, which are positively charged. b. Gamma particles are neutral and are more penetrating than Beta-particles. c. In general neutral particles can be said to be having very high penetrating power.

A

a and b are universally true.

B

a and b are false but c is true.

C

c is resultant statement of a and b.

D

c is not resultant statement of a and b.

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A): In Gunn effect, when electric field is varied from zero to a threshold value the drift velocity decreases. Reason (R): Beyond the threshold electric field, if the electric field is increased, the drift velocity is decreased and the diode exhibits negative resistance. In the light of the above statement, choose the most appropriate answer from the options given below:

A

Both (A) and (R) are correct and (R) is the correct explanation of (A)

B

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

C

(A) is correct but (R) is not correct

D

(A) is not correct but (R) is correct

A force \(\vec F\), acting on a electric charge q, in presence of electro-magnetic field, moves the charge parallel to the magnetic field with velocity \(\vec v\). Then \(\vec F\) is equal to (where \(\vec E\)and \(\vec B\) are electric field and magnetic field respectively)

A

\(q\vec E\)

B

\(q\left( {\vec v \times \vec B} \right)\)

C

\(q\left( {\vec v \times \vec E} \right)\)

D

\(q\vec B\)

Consider the following statement: 1. X-ray beam can be deflected by a magnetic field. 2. X-ray beam can be deflected by a electric field. 3. X-ray can neither be deflected by an electric field nor by a magnetic field. Which of the following statement is correct?

A

Only 1

B

Only 2

C

Only 3

D

Both 1 and 3

Which of the following statement about the force of attraction between the particles is/are correct? The force of attraction between the particles of the same substance is known as cohesion. The force of attraction is maximum in the particles of solid matter and minimum in the particles of gaseous matter.

A

Only 1

B

Only 2

C

Both 1 & 2

D

None of the above

An electric dipole is placed in a uniform electric field. The net electric force on the dipole

A

Always zero

B

Always - ve

C

Depends on the orientation of the dipole

D

None of these

The length of a rectangular field F is 3 km greater than the side of a square field M , and the width of field F is 3 km less then the side of field M. If the area of field M is m2 square km, what is the area of field F?

A

m2 +6

B

6

C

m2 - 6

D

m2 +9

What is the phenomenon of migration of colloidal particles under the influence of a spatially uniform electric field known as?

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