A lift is going up. The total mass of the lift and the passenger is 1000 kg The variation in the speed of the lift is as given in the graph. The tension in the rope pulling the lift at t= 10.5sec will be

If  is a homogeneous function of order .

I) 

II) 

III) 

Which of the above statements is correct ?

We have to remember all the three results instead of deriving them.

Rockets are launched in eastward direction to take advantage of

The  additional K.E. to be provided to a satellite of mass m revolving around a planet of mass M , to transfer it from a circular orbit of radius R₁ to another radius R₂(R₂>R₁) is

A reduction in atomic size with increase in atomic number is a characteristic of elements of

A satellite moves in a circle around the earth, the radius of this circle is equal to one half of the radius of the moon's orbit the satellite completes one revolution in

Two satellites A and B go round a planet in circular orbits having rarely 4 R and  If the speed of satellite A is 3V, then speed of satellite B is

The yellow coloured solution of salt of chromate ions change to orange colour on acidification due to the formation of

A person sitting in a chair in a satellite feels weightless because

The time period of a satellite of earth is 5 hours If the separation between the earth and the satellite is increased to four times the previous value, the new time period will become ...... Hours

If is symmetric then trace of A  is

The oxidation number of Mn in the product of alkaline oxidative fusion of MnO₂ is

When a satellite going round the earth in a circular orbit of radius r and speed v loses some of its energy, then r and v changes as

If , then at

If then a + x =

Which of the following statements about the interstitial compounds is incorrect?