Class 11th

Two blocks of mass 10 kg and 5 kg are connected with a light string which passing over an ideal pulley attached with a fixed smooth wedge. If the system is released from rest, then the acceleration of the blocks will be

A body when dropped freely from certain height, reaches the ground in time t second. The average velocity during its journey is

If energy E, volume V and time T are taken as fundamental units, the dimensional formula of the force will be

A particle is executing S.H.M. its potential energy v/s displacement graph is given by

The value of restoring force constant is :-

The molecules of a given mass of a gas have r.m.s. velocity of 200 m/s at 127°C and 1.0 × 105 N/m2 pressure. When the temperature and pressure of the gas are respectively, 227°C and 0.05 × 10⁵ N/m², the r.m.s. velocity of its molecules is :

Which of the following material is most suitable for making cooking utensil?

Length v/s temperature graph of A and B is given below. Find the relation between αA & αB.

A capillary glass tube records a rise of 20 cm when dipped in water. When the area of cross- section of the tube is reduced to half of the former value, water will rise to a height of:-

Kindly go through the solution 

Energy required to shift a body of mass m from an orbit of radius 2R to 3R is (mass of planet is M)