At a point \(A\) on the earth's surface the angle of \(\operatorname{dip}, \delta=+25^{\circ} .\) At a point \(B\) on the earth's surface the angle of dip, \(\delta=-25^{\circ} .\) We can interpret that

A \(250-\) turn rectangular coil of length \(2.1\, cm\) and width \(1.25\, cm\) carries a current of \(85\, \mu A\) and subjected to a magnetic field of strength \(0.85\, T.\) Work done for rotating the coil by \(180^o \) against the torque is ..............  \(\mu\  J\)

The minimum energy required to launch a satellite of mass \(m\) from the surface of earth of mass \(M\) and radius \(R\) in a circular orbit at an altitude of \(2 R\) from the surface of the earth is:

For which one of the following, Bohr model in not valid \(?\)

A person sitting in the ground floor of a building notices through the window, of height \(1.5 \;m ,\) a ball dropped from the roof of the building crosses the window in \(0.1 \;s\). What is the velocity (In \(m/s\)) of the ball when it is at the topmost point of the window \(?\left( g =10\, m / s ^{2}\right)\)

A long solenoid of radius \(1\,mm\) has \(100 \)turns per \(mm\). If \(1\,A\) current flows in the solenoid, the magnetic field strength at the centre of the solenoid is:

A square loop of side \(1\,m\) and resistance \(1\,\Omega\) is placed in a magnetic field of \(0.5\,T\). If the plane of loop is perpendicular to the direction of magnetic field, the magnetic flux through the loop is \(\dots\dots\) webar

For the following reactions .  . .Which of the following statements is correct ? \((A)\,\,CH_3CH_2CH_2Br + KOH  \rightarrow  CH_3CH CH_2 + KBr + H_2O\)

Calculate the energy in joule corresponding to light of wavelength \(45\ nm.\) (Planck's constant, \(h=6.63 \times 10^{-34} \ J \ s,\) speed of light, \(c=3 \times 10^8 \ m \ s^{-1}\))

What are the potential drawbacks in adoption of the IVF method?
A. High fatality risk to mother
B. Expensive instruments and reagents
C. Husband/wife necessary for being donors
D. Less adoption of orphans
E. Not available in India
F. Possibility that the early embryo does not survive

Choose the correct answer from the options given below:

Two toroids \(1\) and \(2\) have total number of tums \(200\) and \(100 \) respectively with average radii \(40\; \mathrm{cm}\) and \(20 \;\mathrm{cm}\) respectively. If they carry same current \(i,\) the ratio of the magnetic flelds along the two loops is

Select the correct route for the passage of sperms in male frogs.

Statements related to human Insulin are given below. Which statement(s) is/are correct about genetically engineered Insulin? \((a)\) Pro-hormone insulin contain extra stretch of C-peptide \((b)\) A-peptide and B-peptide chains of insulin were produced separately in E.coli, extracted and combined by creating disulphide bond between them. \((c)\) Insulin used for treating Diabetes was extracted from Cattles and Pigs. \((d)\) Pro-hormone Insulin needs to be processed for converting into a mature and functional hormone. \((e)\) Some patients develop allergic reactions to the foreign insulin. Choose the most appropriate answer from the options given below: