Q.1
In a ________ the wave particles of the medium vibrate in a direction perpendicular to the direction of wave propagation
Q.2
In the absence of the earth's atmosphere, sky would appear
Q.3
'Farad' is the unit of :
Q.4
In the case of bodies falling under gravity which of the following remains constant at a given place?
Q.5
The instrument used to see the distant objects on the Earth is
Q.6
Who gave the Theory of Relativity?
Q.7
A person can jump higher on the moon's surface than on the earth because :
Q.8
The velocity required to place a vehicle in orbit around the moon is ________ that required to place it in orbit round the earth.
Q.9
Which of the following is not a vector quantity?
Q.10
Which of the following is not a vector quantity ?
Q.11
Which of the following celestial bodies contains abundant quantities of helium-3, a potential source of energy ?
Q.12
The period of revolution of a certain planet in an orbit of radius R is T. Its period of revolution in an orbit of radius 4R will be:
Q.13
Flight Recorder is technically called :
Q.14
A gradual increase in loudness is known as
Q.15
Which of the following is the unit of perceived loudness of sound ?
Q.16
The component used for tuning a radio is basically a variable
Q.17
Which of the following have the same unit ?
Q.18
Kilohertz is a unit which measures
Q.19
Which of the following is an example of continous emission spectrum?
Q.20
Intensity of gravitational field of earth is maximum at
Q.21
1 Micron is equal to
Q.22
What is the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
Q.23
Red light has a wavelength of 70 A°. In "nm" it is
Q.24
Lux is the SI unit of
Q.25
Which of the following are used for accurately measuring very small time intervals ?
Q.26
The SI unit of luminous emittance is :
Q.27
The unit of measurement of noise is
Q.28
Which of the following pair is Incorrect?
I. Parsec - Distance
II. Barrel - Liquid
III. Light year - Time
Q.29
Radian is used to measure
Q.30
Who gave black hole theory?
Q.31
The capacity of a water heater is measured in
Q.32
How many bottles of water is a gallon?
Q.33
Which physical quantity is measured in 'siemens'?
Q.34
Hydroscope is an instrument that shows changes in:
Q.35
Unit of impedance is ________
Q.36
Which measurement depends on gravitational force?
Q.37
Who is known as the 'father of quantum theory'?
Q.38
Stress can be defined as ________ quantity.
Q.39
In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by
Q.40
Which of the following occurred first ?
Q.41
These waves cannot be transmitted through vacuum.
Q.42
Which is evidence that supports the dynamo theory?
Q.43
Which of the following is indicated by the colour of a star ?
Q.44
Which of the following property of sound is affected by change in air temperature?
Q.45
A wave with high amplitude have
Q.46
A standing wave occurs when
Q.47
What is the unit of the physical quantity "Inductance"?
Q.48
Pycnometer is an instrument used to measure the
Q.49
A micron is equal to
Q.50
Depth of ocean is measured by
0 h : 0 m : 1 s