Q.1:- Hertz is a unit of measuring ?
- Intensity of waves
- Frequency of waves
- Wavelength
- Clarity of waves
Q.2:- Which of the following colour of light deviates least through the prism ?
- Yellow
- Green
- Violet
- Red
Q.3:- Which of the following phenomenon helps to conclude that light is a transverse wave ?
- Interference
- Diffraction
- Polarisation
- Refraction
Q.4:- When number of turns in a coil is tripled without any change in the length of coil, its self-inductance becomes ?
- Nine times
- Three times
- Six times
- One-Third
Q.5:- Which of the following options correctly explains the term heat budget ?
- It is a mode of transfer of heat through matter by molecular activity
- It is the balance between incoming and outgoing radiation
- It is the radiation from the Earth in the form of long waves
- It is the amount of heat which the surface of Earth receives from the sun
Q.6:- The Dynamo Converts ?
- Electrical Energy into Mechanical Energy
- Mechanical Energy into Magnetic Energy
- None of these
- Mechanical Energy into Electrical Energy
Q.7:- Which of the following property of sound is affected by change in air temperature ?
- Frequency
- Intensity
- Amplitude
- Wavelength
Q.8:- Plank’s constant has the dimensions of ?
- Energy
- Linear Momentum
- Angular Momentum
- Force
Q.9:- Which of the following is not a vector quantity ?
- Speed
- Velocity
- Torque
- Displacement
Q.10:- Which of the following have the same unit ?
- Work and power
- Torque and moment of inertia
- Work and torque
- Torque and angular momentum
Q.11:- A man in a train moving with a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is ?
- A straight line
- A circle
- A parabola
- None of these
Q.12:- Distances of stars are measured in ?
- Galactic Unit
- Stellar Mile
- Cosmic Kilometre
- Light Year
Q.13:- When milk is churned, the cream separates from it due to ?
- Frictional force
- Centrifugal force
- Gravitational force
- Viscous forces
Q.14:- The metal whose electrical conductivity is more, is ?
- Copper
- Aluminium
- Silver
- Lead
Q.15:- Water from soil enters into the root hairs owing to ?
- Atmospheric pressure
- Capillary pressure
- Root pressure
- Osmotic pressure
Q.16:- Solar energy is due to ?
- Fusion reactions
- Fission reactions
- Combustion reactions
- Chemical reactions
Q.17:- Which one of the following has the highest value of specific heat ?
- Glass
- Copper
- Lead
- Water
Q.18:- The important unit of a microprocessor is ?
- ALU
- Array of registers
- Control unit
- All of the above
Q.19:- These waves cannot be transmitted through vacuum ?
- Light
- Sound
- Heat
- Electromagnetic
Q.20:- The device used for locating submerged objects under sea is ?
- Sonar
- Radar
- Laser
- Maser
Q.21:- Which of the following is not a part of a CRT ?
- Phosphor Screen
- Shadow Mask
- Electron Gun
- Gas Plasma
Q.22:- The following particles move with same kinetic energy. Which of them has maximum momentum ?
- Electron
- Proton
- Deutron
- Alpha Particle
Q.23:- The part of the eye having the largest refractive index is ?
- Cornea
- Aqueous humor
- Lens
- Vitreous humor
Q.24:- In nuclear reactor, heavy water is used as ?
- Coolant
- Fuel
- Moderator
- Atomic Smasher
Q.25:- Conversion of sound energy into electrical energy is done by ?
- Solar Cell
- Gramophone
- Microphone
- Loudspeaker
