861 The system which can exchange matter as well as energy with its surroundings is called____________? Physics Medium Full question → A open system B Closed system C Isolated system D Inert system
862 The process in which no heat enters or leave the system known as _____________? Physics Medium Full question → A Isochoric B Isobaric C adiabatic D Isothermal
863 Mach is the unit of measurement in stating the speed of a moving object in relation to__________? Physics Medium Full question → A The speed of sound B The speed of other object C The speed of light D The speed of air resistance
864 When two charges are placed in water then the Coulomb force between them reduces to _____________? Physics Medium Full question → A 1/2 times B 1/3 times C 1/78 times D 1/58 times
865 Which one of the following of glass can cut ultraviolet rays? Physics Medium Full question → A Jena Glass B Soda Glass C Pyrex Glass D Crookes Glass
866 Optics does not deal with ___________? Physics Medium Full question → A Nature of light waves B Properties of light C Characteristics of sound D Lenses and mirrors
867 Length, mass, time, intensity of light and amount of substance are examples of ____________? Physics Medium Full question → A Base quantities B Derived quantities C Prefixes D Quartile quantities
868 The anti-matter is composed of: __________________? Physics Medium Full question → A Anti-electrons B Anti-proton C Anti-neutron D All of these
869 Power of a lens is one diopter if its focal length is Physics Medium Full question → A 1 meter B 2 meter C ½ meter D ¼ meter
870 Which of the following is a good moderator? Physics Medium Full question → A Helium B Cadmium C Graphite D Ordinary Water
871 Intensity level of threshold of pain is: _____________? Physics Medium Full question → A 60 db B 80 db C 100 db D 120 db
872 Value of ‘g’ at the surface of moon is _____________? Physics Medium Full question → A 6ge B ge/6 C 2ge D Zero
873 What is wavelength of visible spectrum? Physics Medium Full question → A 8500 – 9800 angstrom B 7800 – 8000 angstrom C 3900 – 7600 angstrom D 1300 – 3000 angstrom
874 The co efficient of linear expansion is equal to__________? Physics Medium Full question → A ΔL = αLΔT B ΔL/LΔT C LΔT/ΔL D αLΔT-ΔL
875 When a projectile moves upward , its vertical component of velocity? Physics Medium Full question → A Decrease B increase C Remains same D None of these
876 Ceramic magnets are_______? Physics Medium Full question → A Semiconductors B Insulators C Conductors D None of these
877 The reverse of LED is______? Physics Medium Full question → A Diode B Resistor C Photodiode D Capacitor
878 The light used in optical fiber transmission is________? Physics Medium Full question → A Dichromatic B Monochromatic C Pentachromatic D None of these
879 The back emf of a motor which is just started is_________? Physics Medium Full question → A Zero B Maximum C Minimum D Optimum
880 If the momentum of an object is increased twice, then what will be the kinetic energy? Physics Medium Full question → A Twice B Thrice C Four times D Sixteen times