Please select a subject first
Advertisements
Advertisements
Answer the following questions based on a hot cathode ray tube
Name the charged particles
Concept: undefined >> undefined
Answer the following questions based on a hot cathode ray tube.
State the approximate voltage used to heat the filament
Concept: undefined >> undefined
Advertisements
Answer the following questions based on a hot cathode ray tube.
What will happen to the beam when it passes through the electric field?
Concept: undefined >> undefined
State three factors on which the rate of emission of electrons from a metal surface depends
Concept: undefined >> undefined
Why do Free electrons not leave the metal surface on their own
Concept: undefined >> undefined
How can they be made to leave the metal surface? (State any two ways)
Concept: undefined >> undefined
State the dependence of angle of deviation On the refractive index of the material of the prism.
Concept: undefined >> undefined
State the dependence of angle of deviation On the wavelength of light
Concept: undefined >> undefined
State the ways by which the frequency of transverse vibrations of a stretch string can be increased
Concept: undefined >> undefined
The music system draws a current of 400 mA when connected to a 12 V battery.
- What is the resistance of the music system?
- The music system if left playing for several hours and finally the battery voltage drops and the music system stops playing when the current drops to 320 mA. At what battery voltage does the music system stop playing?
Concept: undefined >> undefined
An element `""_ZS^A` decays to `""_85R^222` after emitting 2 α particles and 1 β particle.
Find the atomic number and atomic mass of the element S.
Concept: undefined >> undefined
A radioactive substance is oxidized. Will there be any change in the nature its radioactivity? Give a reason for your answer
Concept: undefined >> undefined
From the diagram given below. answer the question that follows:
1) What kind of pulleys are A and B?
2) State the purpose of pulley B.
3) What effort has to be applied at C just raise the load L = 20 kgf?
(Neglect the weight of pulley A and friction)
Concept: undefined >> undefined
A pulley system has three pulleys. A load of 120 N is overcome by applying an effort of 50N. Calculate the Mechanical Advantage and Efficiency of this system.
Concept: undefined >> undefined
Write a relationship between the angle of incidence and angle of refractions for a given pair of media
Concept: undefined >> undefined
What do you understand by the term Scattering of light?
Concept: undefined >> undefined
Give one reason for Ultrasonic waves use for echo depth sounding purpose.
Concept: undefined >> undefined
Why are the Ultrasonic waves are not audible to us?
Concept: undefined >> undefined
Arrange α, β, and γ rays in ascending order with respect to their
1) Penetrating power.
2) Ionising power
3) Biological effect
Concept: undefined >> undefined
