1)The velocity of_____is less than the velocity of red light in vacuum.
a) yellow light
b) green light
c) sound wave
d)violet light
2)The value of gravitational force of attraction is equal to____ when two 1kg masses are kept at a distance of 1m
a)1N b) 0.1N c)6.67x10^-11 N d)1/6.67 x10^-11 N
3) The height of the mercury in the barometer is less than 760mm of Hg. It means the atmospheric pressure
a) is greater than 1atm
b) is less than 1atm
c) is equal to 1atm
d) is equal to 0atm
4) The magnitude of induced emf is____the rate of change of magnetic flux through it.
a)directly proportional to
b) inversely proportional to
c)inversely proportional to the square of d) directly proportional to the square of
5) Water equivalent is equal to
a)refraction
b) reflection
c)total internal reflection
d)diffraction
6) The dimension of mass in dimensional formula of a velocity is equal to
a)0 b)1 c) 2 d)3​
