Which among the material has greater resistivity at room temperature ?
A) Iron
B) Glass
C) Gold
D) Germanium
1 Answers
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Number of gaseous oxides among the following at room temperature is: (a) `N_(2)O` (b) `NO` (c) `N_(2)O_(3)` (d) `NO_(2)` (e) `N_(2)O_(5)` (f) `P_(4)O_
Correct Answer - 4(a,b,d and h)
2 Answers 1 views
A ball is thrown from a comer of room of length 20 m and height 5 m such that the ball moves along the length of room just touching the ceiling and dr
Correct Answer - (i)`45^(@)` (ii)`10sqrt(2)m//s` (iii) 2 sec
2 Answers 3 views
Which among the following material has specific heat more than that of ice?
Correct option is A) Water
2 Answers 1 views
If the temperature in a room is 30 °C, temperature in degree fahrenheit is
Correct option is: (C) 86 °F
2 Answers 1 views
Which of the following metal conductors has least resistivity value?
Correct option is B) silver
2 Answers 1 views
A wire of length lm and radius 0.1 mm has a resistance of 100 Ω. The resistivity of the material is ………………….
B) 3.14 × 10-6 Ω – m
2 Answers 1 views
Which one of the following material has high resistivity
Correct option is D) rubber
2 Answers 1 views
Which among the following materials have their resistivity of the order of 1014 to 1016 Ω – m
C) insulators
2 Answers 1 views
The resistivity of Nichrome is 10^-6 Ω-m. The wire of this material has radius of 0.1 mm with resistance 100 Ω, then the length will be
Correct option is: (A) 3.142 m
2 Answers 1 views
Vinay brought the following material into the class room. Plastic tube, wooden spoon, water, clean cotton cloth, old newspapers,
(A) Recycled paper
2 Answers 1 views