2018年4月8日 · We know that all non-zero digits are significant and the zeros at the beginning of a number are not significant. Therfore number 161 cm, 0.161 cm and 0.0161 cm have 3,3 and …

2019年11月6日 · The number of gram molecules of oxygen in 6.02 x 10²⁴ CO molecules is . Options (a) 10 gm molecules (b) 5 gm molecules (c) 1 gm molecules (d) 0.5 gm molecules

2018年4月8日 · The focal length of the objective of a terrestrial telescope is 80 cm and it is adjusted for parallel rays, then its power is 20. If the focal length of erecting lens is 20 cm, then …

2018年4月8日 · If the focal length of a concave mirror is 50 cm, then where should the object is placed, so that its image is two times and inverted . Options (a) 55 cm (b) (-75 cm) (c) 65 cm …

A person has a minimum distance of distinct vision as 50 cm. The power of lenses required to read a book at a distance of 25 cm is . Options (a) 3 D (b) 1 D (c) 2 D (d) 4 D. Correct Answer: …

⇒ l₂ = (75/79) met = (75×100)/79 = 94.9 cm. Related Questions: If both the resistance and the inductance in an LR AC series circuit are doubled; A cell can be balanced against 110 cm and …

2018年4月8日 · (a) ohm cm (b) ohm⁻¹ cm² g.equiv.⁻¹ (c) ohm cm² g.equiv (d) ohm⁻² cm⁻² g.equiv. Correct Answer: ohm⁻¹ cm² g.equiv.⁻¹. Explanation: When it is placed between two parallel …

2018年4月8日 · A concave mirror ia placed over a beaker containing water of (µ = 1.33) and image of the object placed at the bottom of beaker is formed at a distance of 25 cm from the …

2018年4月8日 · Two straight wires each 10 cm long are parallel to one another and seperated by 2 cm. When the current flowing in them is 30A and 40 A respectively, then the force …

2018年4月8日 · The current in the windings of a toroid is 2.0 A. There are 400 turns and the mean circumferential length is 40 cm. If the inside magnetic field is 1.0 T, the relative permeability is …