Transfer of heat in a fluid with the help of heated particles from a hotter region to a colder region is called:

Mercury thermometer was invented by

________ is not a type of heat transfer.

When does the sea breeze occur?

1 cal. = ?

In which of the following processes is heat transferred directly from molecule to molecule?

In which of the following processes of heat transfer no medium is required?

At what temperature are the Celsius and Fahrenheit equal?

Specific heat Capacity is -

Which of the following is the fastest process of heat transfer?

When a bus starts suddenly, the passengers are pushed back. This is an example of which of the following?

Who discovered atom bomb?

Which of the following has highest penetrating power?

Father of Indian Nuclear physics?

Thermonuclear bomb works on the principle of:

Which of the following is used as a moderator in nuclear reactor?

The instrument used for measuring the Purity / Density / richness of Milk is

Anemometer measures

Which one of the following instrument is used for measuring depth of ocean?

The instrument used to measure absolute pressure is

Which instrument is used to measure altitudes in aircraft?

The earthquake waves are recorded by an instrument called:

Which one of the following instruments is used for measuring moisture content of air?

______ instrument is used to measure potential difference.

Instrument used for measuring very high temperature is:

SI unit of radioactivity is

Which of the following type of waves is used in the SONAR device?

Phenomenon of sound which is applied in SONAR?

Which of these sound waves are produced by bats and dolphins?

' സബ്സോണിക് ' എന്നറിയപ്പെടുന്ന ശബ്ദതരംഗം ഏത് ?

The frequency range of audible sound is__________

Phenomenon of sound which is used in stethoscope ?

Name the sound producing organ of human being?

Persistence of sound as a result of multiple reflection is

The solid medium in which speed of sound is greater ?

Study of sound is called

What is the effect of increase of temperature on the speed of sound?

Nature of sound wave is :

In which medium sound travels faster ?

In which of the following the sound cannot travel?

ഒരു വസ്തുവിനെ ഭൂമിയുടെ ധ്രുവപ്രദേശത്തു നിന്നും ഭൂമദ്ധ്യരേഖാ പ്രദേശത്തേക്ക് കൊണ്ടുപോകുമ്പോൾ അതിന്റെ പിണ്ഡവും ഭാരവുമായി ബന്ധപ്പെട്ട ശരിയായ പ്രസ്താവന തിരഞ്ഞെടുക്കുക.

ഒരു കോൺകേവ് ദർപ്പണത്തിന്റെ പോളിൽ നിന്നും മുഖ്യഫോക്കസിലേക്കുള്ള ദൂരം12 cm ആണെങ്കിൽ അതിന്റെ വക്രത ആരം എത്ര ?

ദ്രവ്യത്തിന്റെ ഒമ്പതാമത്തെ അവസ്ഥ ഏത് ?

വീർപ്പിച്ച ഒരു ബലൂൺ വെള്ളത്തിന് അടിയിലേക്ക് താഴ്ത്തുമ്പോൾ അതിന്റെ വലുപ്പം കുറയുന്നു. ഇത് താഴെ തന്നിരിക്കുന്ന ഏത് നിയമവുമായി ബന്ധപ്പെട്ടിരിക്കുന്നു ?

What type of lens is a Magnifying Glass?

What type lens is used to correct hypermetropia ?

Mirrors _____ light rays to make an image.

What kind of lens is used by short-sighted persons?

What kind of image is created by a concave lens?

The head mirror used by E.N.T doctors is -