How many people belong to exactly two group?
People belonging to exactly two groups = (20+4+4) = 28
The radii of curvature of the faces of a double convex lens are 20 cm and 30 cm. If focal length of the lens is 36 cm find the refractive index of t...
What is the telescope designed to search for earth-size planets in the nearby region of our galaxy, termed as?
A potentiometer wire of length 1 m has a resistance of 5 Ω. It is connected to a 8 V battery in series with a resistance of 15 Ω. Determine the emf ...
Ultra violet radiations of the Sun do not reach the earth because, earth's atmosphere is surrounded by –
Which of the following is NOT a conductor of electricity?
A plane electromagnetic wave travels in vacuum along z-direction. What can you say about the directions of its electric and magnetic field vectors? If t...
A heating element using nichrome connected to a 230 V supply draws an initial current of 3.2 A which settles after a few seconds to a steady value of 2....
If the temperature of a place increases suddenly, the relative humidity –
A positron is an anti-particle of an electron, having the same mass but opposite charge to electron. Then, the minimum energy released in annihilation ...
