Q.1
The time period of a pendulum when taken to the Moon would:
Q.2
"God Particle" is
Q.3
Which among the following waves is used for communication by artificial satellites ?
Q.4
Modem is used mostly for ?
Q.5
The layer of atmosphere used for radio-wave transmission is
Q.6
The audio signals of TV are
Q.7
What frequency range is the high frequency band?
Q.8
A body falling through a liquid acquires a steady velocity is known as
Q.9
Rotameter is used to measure
Q.10
Siphon will fail to work if
Q.11
Necessary element of change in solar energy to electrical energy
Q.12
The blue colour of water in the sea is due to
Q.13
The waveform of a certain signal can be studied by
Q.14
In a photocell light energy is converted into
Q.15
A voltaic cell converts chemical energy to
Q.16
Which of the following has the highest frequency?
Q.17
Choose the most appropriate answer: In which atmospheric layer are the communication satellites located?
Q.18
In an optical fibre the signal is transmitted
Q.19
The spoon dropped by an astronaut in a satellite will
Q.20
An aircraft can perform aerobatic manoeuvres in a vertical loop because of
Q.21
Sprayer functions on
Q.22
In hydro power station, the motion produced in turbines is due to
Q.23
The SI unit for measuring work and energy is
Q.24
If a person moves a trolley for a distance of 10 m with a force of 50 N, then the work done is
Q.25
The bending of light when it passes around a corner or a slit is due to ________
Q.26
The GPS device in an automobile uses which communication channel?
Q.27
In a optical fibre cable, the signal is propagated along the
Q.28
The work done by the string of a simple pendulum during one complete oscillation is equal to
Q.29
Conversion of sound energy into electrical energy is done by
Q.30
Work done in a free expansion process is
Q.31
Which one is not a part of Kepler's Law?
Q.32
Kepler's law of planetary motion states that the square of the time period is proportional to the
Q.33
A body of mass 2 kg is thrown upward with initial velocity of 20 m/s. After 2 seconds, its kinetic energy will be : (g = 10 m/s2)
Q.34
How much calorie of energy is released by a boiled egg ?
Q.35
A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum:
Q.36
A drop of liquid assumes spherical shape because:
Q.37
Which Color has the Longest Wavelength?
Q.38
The colour of sky appears blue due to
Q.39
For a freely falling body, the sum of kinetic energy and potential energy is always
Q.40
A body of 4.0 kg is lying at rest. Under the action of a constant force, it gains a speed of 5 m/s. The work done by the force will be ________
Q.41
In a rechargeable cell what kind of energy is stored within the cell?
Q.42
A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is
Q.43
The colour of the ocean appears to be blue because the sunlight falling on it is
Q.44
Which of the following statements is true when we see ''rainbow' ?
Q.45
What is the other name of Galileo's law of falling bodies?
Q.46
An object of 10 kg is moving with a speed of 2 m/s. The kinetic energy of the object is
Q.47
If both the mass and the velocity of a body is increased to twice of their magnitude, the kinetic energy will increase by
Q.48
The energy stored in a watch spring is
Q.49
An object that has kinetic energy must be
Q.50
A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:
0 h : 0 m : 1 s