Q.1
A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If rg and ra are respectively the electrical resistivities of gold and aluminium, then which one of the following relations is correct?
Q.2
In a Carnot engine when heat is taken from the source, its temperature
Q.3
Even after sunset, the air near the Earth's surface continue to receive heat due to
Q.4
Stationary wave is formed by
Q.5
Ultrasound devices operate with minimum frequency from
Q.6
In AC circuits, AC meters measure
Q.7
Which of the following is not reversible?
Q.8
In a diesel engine the high temperature needed to ignite the fuel is achieved by
Q.9
Which of the following options correctly explains the term heat budget?
Q.10
Which one of the following is not a feature of Indifference Curve?
Q.11
The first law of thermodynamics is simply the case of
Q.12
The commonly used coolant in refrigerators is
Q.13
Energy in reflected light :
Q.14
We always see the same face of the moon, because
Q.15
Which planet has the lowest density?
Q.16
The sensation of weightlessness in a spacecraft in an orbit is due to the
Q.17
By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?
Q.18
In Astrophysics, what name is given to a hypothetical hole in outer space from which stars and energy emerge?
Q.19
If there were no gravity, which of the following will not be there for a fluid?
Q.20
Number of lattices in the orthorhombic system is
Q.21
The term ''equinox' means
Q.22
If the earth suddenly stop rotating, the value of "g" will be
Q.23
Heat transfer horizontally within the atmosphere is called
Q.24
Instruments for measuring Solar Radiation?
Q.25
The fact that the planets move around the Sun, not in circles but in ellipses, was first demonstrated by
Q.26
A bomb explodes on the moon. You will hear its sound on earth after ________
Q.27
The different colours of different stars are due to the variation of
Q.28
Which is the point from where an azimuth originates?
Q.29
The weight of a body acts through the centre of
Q.30
The term ''Isoneph' indicates the lines of equal
Q.31
What is the minimum escape velocity of rocket to be launched into space ?
Q.32
If the distance between Sun and Earth becomes double, then the gravitational force on Earth will be
Q.33
If an empty cylinder is half filled with a liquid, its center of gravity is
Q.34
The wavelength of a wave is the distance between
Q.35
Stars are held together by
Q.36
The minimum number of geostationary satellites needed for uninterrupted global coverage is :
Q.37
Which of the following is correct about the properties of Gravitational Forces?
Q.38
If the spinning speed of the earth is increased then the weight of body at the equator
Q.39
What is the escape velocity of the rocket in the earth?
Q.40
The height of a geo-stationary satellite from the Earth's surface is approximately :
Q.41
Why is weightlessness experienced while orbiting the earth in space ships ?
Q.42
The period of revolution of a geostationary satellite is
Q.43
The laws which govern the motion of planets are called ________
Q.44
The large collection of stars, dust and gas held together by gravitational attraction between components is known as
Q.45
Two vectors are said to be equal if
Q.46
Which of the following is a vector quantity?
Q.47
The mass of a star is two times the mass of the Sun. How it will come to an end ?
Q.48
. . . . . . . . . exerts a force on anything that has an electric charge.
Q.49
Temperature of distant luminous bodies can be determined by
Q.50
Longitudinal waves cannot travel through
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