4.2 J kg-¹K^-1

1 cal g^-1 ℃-1

1 kcal g^-1 ℃^-1

4.2 kJ kg^-1 ℃-¹

4.2 kJ g^-1K^-1

The red and orange focus nearer the lens

The refractive index of the lens is different for the color of light

Various colors in white light do not all focus at the same point

The lens surface is not perfectly smooth

Violet and blue focus farthest away from the lens

It is most useful type of radiation therapy

It is not suitable for radiation therapy

It has great destructive power.

It is most penetration

It is an electron

To measure of fluid pressure

Under water exercise for polimyelitis patients

To prevent the decubitus ulcers

To determine the high value of sugar in the urine

To measure the relative density

30 (outside): 1 (inside) for K⁺

30 (inside): 1 (outside) for K⁺

10 (outside): 1 (inside) for Na⁺

10 (inside): 1 (outside) for Na⁺

20 (outside): 1 (inside) for Cl^-

by fixed position of coil

the effective depth is 0.15 m

the smallest detail visible is 0.75 mm

the effective depth is 1.5m

the smallest detail visible is 75 cm

its wavelength is 0.75mm

flow resistance

Diameter of the tube

centre of gravity

Acceleration

pressure gradient

the dynamic frictional force when a car moving with constant speed.

the tension along the string by which a stone moving in a circle

the static frictional force when a car making a turn on a level road

the gravitational force when the earth revolves around the sun

the electric force when the electrons around nuclei

Carbon dioxide laser can treat throat cancer

One curie is the activity of 1kg of radium

Argon laser is can remove tattoo without noticeable scarring

The range of alpha radiation is less than a tenth of a millimeter inside the body

Beta radiation is much less hazard if it is injected