Which of the following could be effectively used to reduc...
Which of the following could be effectively used to reduce friction?
kerosene
grease
water
petrol
Correct answer is B
grease is more viscous than the rest of the liquids
If an object just begins to slide on a surface inclined at 30o to the horizontal,the coefficien...
Which of the following statements about defects of vision is/are CORRECT? i. for a long sighted p...
A metal sheet of area 100cm2 was heated through 70°C. Calculate its new area if the linear ...
The gravitational pull on the moon is 16 that of the earth. If a body weighs 6.0 N on t...
The linear expansivity, α, and cubic expansivity, γ, of a material are related by ...