Physics-
General
Easy
Question
Moment of inertia of a thin uniform semicircular wire having mass M, radius R and centre C about an axis passing through point O and perpendicular to its plane is
The correct answer is:
Related Questions to study
Physics-
A uniform rod having length L, is made of material having density 
, coefficient of thermal expansion a and young's modulus Y. It is placed between two vertical walls having separation L and coefficient of friction 
. What is the minimum rise in temperature so that the rod does not falls down on releasing.
A uniform rod having length L, is made of material having density , coefficient of thermal expansion a and young's modulus Y. It is placed between two vertical walls having separation L and coefficient of friction . What is the minimum rise in temperature so that the rod does not falls down on releasing.
Physics-General
Physics-
A monatomic ideal gas is used as the working substance for the Carnot cycle shown in the figure. Processes AB and CD are isothermal, while processes BC and DA are adiabatic. During process AB, 400 J of work is done by the gas on the surroundings. How much heat is expelled by the gas during process CD?
A monatomic ideal gas is used as the working substance for the Carnot cycle shown in the figure. Processes AB and CD are isothermal, while processes BC and DA are adiabatic. During process AB, 400 J of work is done by the gas on the surroundings. How much heat is expelled by the gas during process CD?
Physics-General
Physics-
A ball rolls through a hollow fixed semicircular tube lying flat on a horizontal tabletop. Which diagram best shows the path of the ball after emerging from the tube, as viewed from above?
A ball rolls through a hollow fixed semicircular tube lying flat on a horizontal tabletop. Which diagram best shows the path of the ball after emerging from the tube, as viewed from above?
Physics-General
Physics-
A mass on the end of a spring oscillates with the displacement versus time graph shown to the right. Which of the following statements about its motion is CORRECT?
A mass on the end of a spring oscillates with the displacement versus time graph shown to the right. Which of the following statements about its motion is CORRECT?
Physics-General
Physics-
A tube is open at both ends with the air oscillating in the 4th harmonic. How many displacement nodes are located within the tube?
A tube is open at both ends with the air oscillating in the 4th harmonic. How many displacement nodes are located within the tube?
Physics-General
Chemistry-
Heat of reaction at constant volume is measured in the apparatus:
Heat of reaction at constant volume is measured in the apparatus:
Chemistry-General
Chemistry-
The dissociation energy ofCH4 is 400 kcal mol and that of ethane is 670 kcal m or the 
bond energy is:
The dissociation energy ofCH4 is 400 kcal mol and that of ethane is 670 kcal m or the bond energy is:
Chemistry-General
Chemistry-
The bond dissociation energy of C-H in CH4 from the equation
Kcal is:
The bond dissociation energy of C-H in CH4 from the equation
Kcal is:
Chemistry-General
Chemistry-
The heats of combustion of rhombic and monoclinic sulphur are -70960 and -71030 calorie respectively What will be the heat of conversion of rhombic sulphur to monoclinic sulphur?
The heats of combustion of rhombic and monoclinic sulphur are -70960 and -71030 calorie respectively What will be the heat of conversion of rhombic sulphur to monoclinic sulphur?
Chemistry-General
Chemistry-
Given, 
KJ
KJ
KJ The heat of formation of 
Given, KJ
KJ
KJ The heat of formation of
Chemistry-General
Chemistry-
Heat of combustion of CH4 , C2, C2H4 and C2H4 are -212.8, -373.0, -337.0 and -310.5 kcal respectively at the same temperature. The best fuel among these gases is:
Heat of combustion of CH4 , C2, C2H4 and C2H4 are -212.8, -373.0, -337.0 and -310.5 kcal respectively at the same temperature. The best fuel among these gases is:
Chemistry-General
Chemistry-
Standard heat of formation for CCI4, H20, CO2 and HCI at 298K are - 25.5, - 57.8, 94.1 and 22.1 kJl mol respectively. For the reaction,
what will be 
Standard heat of formation for CCI4, H20, CO2 and HCI at 298K are - 25.5, - 57.8, 94.1 and 22.1 kJl mol respectively. For the reaction,
what will be
Chemistry-General
Chemistry-
If 
for 
and 
-188 kJ mol-I and-286kJ mol , what will be the enthalpy change of the reaction
If for and -188 kJ mol-I and-286kJ mol , what will be the enthalpy change of the reaction
Chemistry-General
Chemistry-
Which of the following units represents the largest amount of energy?
Which of the following units represents the largest amount of energy?
Chemistry-General
Chemistry-
If 
KJ
KJ
KJ
KJ
the heat of foundation 
will be:
If KJ
KJ
KJ
KJ
the heat of foundation will be:
Chemistry-General
