Lens of human eye forms which type of image

which cells of eye decides Intensity of light

which cells of eye distinguish color of light

In myopia what kind of Lens is used

In hypermetropia what kind of Lens is used

In this people cant see near as well as far object

It causes due to difference in radii of curvature of cornea in different planes

As a result point in one plane of object appear in focus while those in other plane are out of the focus

In this cylindrical Lens is used

Magnifying power of microscope

This microscope consists of two convex lens coaxially fixed in hollow tube

How many lens are there in astronomical Telescope

what kind of Lens is used in astronomical Telescope

Final image of astronomical Telescope is

Image formed in terrestrial telescope is

Optical telescope was discovered by

who was the first to use optical telescope systematically

Sparkling of diamond is due to

Shining of air bubble is due to

Miraze & looming is due to

If light is propagating from denser medium towards rarer medium and angle of incidence is more than critical angle , then the light incident on the boundary is reflected back in the denser medium

1 calorie

Amount of heat required to raise the temperature of 1G of pure water through 1°c

amount of heat heat required to raise the temperature of 1G of pure water from 14.5°C to 15.5°C

Amount of heat required to raise the temperature of 1pound of pure water through 1°F

1 Kelvin

Farhenheit

Freezing point of mercury is

Preezing point of alcohol is

Mercury thermometer ranges from

Platinum thermometer ranges from

Thermocouple thermometer ranges from

It measures the temperature of the body by measuring the colour of radiation emitted by the body

The heat required to increase the temperature by unity is called

when temperature of water is increased from 0°c to 4°c its volume

If the temperature of water is increased above 4°c its volume starts

Transfer of heat from one place to other place is called

Heat is transferred from one place to other place by the successive vibrations of the particles of medium without bodily movement of the particles of the medium

In solid heat transfer takes place by

Heat is transferred by the actual movement of particles of the movement from one place to another place

Due to movement of particles a current of particles set up which is called

In liquid & Gases heat transfer takes place by

Earth's Atmosphere is heated by

In this method transfer of heat takes place with the speed of light without affecting the intervening medium

The rate of loss of heat by a body is directly proportional to the difference in temperature between the body and the surrounding

The ratio of emissive power to absorptive power is same for all surfaces at the same temperature and is equal to emissive power of black body at the temperature

The radiant energy emitted by a black body per unit area per unit time is directly proportional to the fourth power of its absolute temperature

Process of conversion of vapour into solid is called

Steam produce more severe burn than water at same temperature due to

Relative humidity increases with

Relative humidity is measured by

If the chances are taking place in the system in such a way that temperature of the system remains constant throughout the change

If the changes are taking place in the system in such a way that there is no exchange of heat energy between the system and the surrounding

Whole of the heat can never be converted into work

Heat by itself can not flow from a body at lower temperature to the body of higher temperature

F/A

Normal force on surface / Area of the surface

A pressure which is exerted by a mercury column of 76cm length at 0°c at 45° latitude at sea level

Atmospheric pressure is measured by

1 Barometer equals to

When a body is immersed partly or wholly in a liquid a force acts on body by the liquid in the upward direction

When a body is immersed partly or wholly in a liquid , there is an apparent loss in the weight of the body which is equal to the weight of the liquid displaced by the body

The center of gravity of a liquid displaced by a body is called

The force of attraction between the molecule of same substance

The force of attraction between the molecule of different substance

The force which oppose the relative motion between different layers of liquid or gases

It is property of liquid by virtue of which it opposed the relative motion between its different layers

The SI unit of Viscosity is

due to cohesive force between its molecule

Due to diffusion of its molecule from one layer to another layer

Viscosity arises with

Viscosity of ideal fluid is

The highest speed achieved by an object freely falling through a gas or liquid

If a fluid is flowing in such a way that velocity of all the fluid particles reaching a particular point is same at all time , then the flow of fluid is said to be

The max velocity upto which fluid motion is streamline is called

In case of streamline flow of uncompressible and non viscous fluid through a tube , total energy per unit volume of fluid is same at all points

device used to measure rate of flow of fluid

The restoring force per unit area setup inside the body subject to deforming form

The relative change in Dimension or shape of a body which is subjected to stress

Under elastic limit , stress is proportional to strain is given under whose law

Elastic constant is of how many types

Young's modules of elasticity

Bulk modules of elasticity

Rigidity modules

Any motion which repeats itself after regular interval of time

If a particles repeats is motion after a regular time interval about a fixed period

Time taken in one complete oscillatory is called

Time after which motion is repeated is called

No of oscillation body in unit time interval is called

It is the disturbance while propagates energy from one place to other without the transport of matter

waves are of how many types

Waves which require material medium for their propagation

mechanical wave is of how many Types

If the particles of the medium vibrate in the direction of propogation

If the particles of medium vibrate perpendicular to the direction of wave then the wave is called

waves produced by a moving motor boat on the surface of water is

Wave which do not require medium for their propagation, which can propagate through vaccum

wavelength range of electromagnetic wave is

electromagnetic waves of wavelength range from 10-³ to 10-² is called

The physical quantity which express the position as well as direction of motion of the particles at that instant with respect to its equilibrium postion