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What is modulus of rigidity?

The modulus of rigidity is defined as the ratio of tangential stress to shear strain. Shear Modulus of elasticity is one of the measures of... View Article

Time rate at which work is done by a force is

Time rate at which work is done by a force is Power.... View Article

What is the relationship between joule and erg?

Joule is the SI unit of energy while erg is the cgs unit of energy. 1 Joule of Energy = 1 Newton x 1 metre 1 erg= 1 dyne x 1 cm 1 joule= 1... View Article

Two vectors are equal if and only if

Vectors are characterized by the magnitude as well as direction.... View Article

A uniformly polarized dielectric amounts to induced charge density but no charge density.

As charges are separated on the surface of the dielectric but not in its interior volume.... View Article

If the temperature difference between the body and surrounding is small, then the rate of loss of heat is directly proportional to

If the temperature difference between the body and surrounding is small, then rate of loss of heat is directly proportional to the temperature of... View Article

Constant speed along a horizontal circular path

A cart moves with a constant speed along a horizontal circular path. From the cart, a particle is thrown up vertically with respect to the cart,... View Article

Rate of conduction of heat depends on:

Rate of conduction of heat depends on a. Area of cross section b. Temperature difference... View Article

Magnitude of resultant of two vectors, A and B is given by square root of:

Magnitude of resultant of two vectors, A and B is given by square root of A2 + B2 + 2AB cosθ... View Article

Which is the fastest mode of heat transfer?

A) Radiation B) Conduction C) Convection D) None of the above The correct option is A) Radiation. Radiation is the fastest mode of heat... View Article

Newton’s law of cooling states that the rate of cooling of a body is proportional to the _____________________.

Newton's law of cooling states that the rate of cooling of a body is proportional to the excess temperature of the body over the surroundings.... View Article

Which of the following is the vector quantity?

Where, gravitational constant-g is a vector quantity. The product of vector and scalar is also a vector. Thus, the weight is a vector quantity.... View Article

Which of the following forces is responsible for elastic behavior of a substance?

Restoring force is responsible for the elastic behavior of substance.... View Article

Materials that show very small plastic range beyond elastic limit are called

Brittle materials have shorter plastic region, i.e., the proportional and fracture points are close.... View Article

Breaking stress is for a material, but breaking force and depends on _______.

Breaking stress is fixed for a material, but breaking force varies and depends on area of cross section.... View Article

A solid sphere placed in a fluid under high pressure experiences force

A solid sphere immersed in a liquid will experience compressive force perpendicular to all the points on the surface. Hence, the sphere is said... View Article

Which of the following factors can bring about a change in the elastic properties of a material? (A) Length of the material (B) Change in temperature (C) Presence of impurities (D) None of the above.

Answer: (B) Change in temperature and (C) presence of impurities Following are the factors affecting the elasticity of the material:... View Article

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