Ferromagnetic material core used for transformer must have

The winding of the solenoid with 1000 turns per meter, core material with relative permeability 400 and carrying a current of 2 A, the magnetisation (M) is approximately given by :

The resistance of a galvanometer is G = 30 \( \Omega \). It gives full scale deflection for \( I_g = 2 \text{ mA} \). It is to be converted into an ammeter to measure current I = 0.3 A. The value of the shunt required is approximately

Match List - I with List - II

List - I	List - II
(A) Simple microscope	(I) A concave mirror is used as an objective
(B) Compound microscope	(II) Two convex lenses both of small focal length
(C) Refracting Telescope	(III) Two convex lenses, one of small focal length other of large focal length
(D) Reflecting Telescope	(IV) Single convex lens of small focal length

Choose the correct answer from the options given below:

A cell of emf 1.1 V and internal resistance 0.5 \(\Omega\) is connected to a 0.5 \(\Omega\) wire. Another cell of same emf is added in series, but current remains unchanged. The second cell's internal resistance is :

An unpolarized light of intensity \(I_0\) is passed through a polariser and is incident on an analyser making an angle of \((\pi/6) \text{ rad}\) with that of the polariser. The intensity of the light transmitted from the analyzer is

In an experiment on the photoelectric effect, the slope of the cut-off voltage versus frequency of the incident light gives

p-Hydroxyazobenzene is also called as

Observe the given diagram representing global biodiversity and answer the question.

Global Bio-diversity
Out of every 10 animals on earth, 7 are

Answer the question on the basis of passage given below :
A colloid is a heterogeneous system in which a substance is dispersed (dispersed phase) as fine particles in another substance called dispersion medium.
Their particle size is intermediate between that of pure solutions (less than 1 nm) and suspensions (greater than 1000 nm). They are known for interesting properties such as enormous surface area, Tyndall effect, Brownian motion etc.
They are widely used in industries and day to day life.
Some prominent uses of colloids are those in smoke precipitators, purification of water, medicines, cleansers etc.
Which of the following statement is false regarding charge on sol particles ?

The two alleles of a gene pair are located on -

The solution set of the linear inequation \(|4 x-3| \leq \frac{3}{4}\) is :

The least positive integer \(x\) satisfying \(29 \equiv x(\bmod 5)\) is