The number of significant figures for the three numbers 161 cm, …
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 3 significant figures respectively. Related Questions: The products formed when diborane is hydrolysed are; Which of the following is used for inducing sleep
Basic Concepts of Chemistry Archives - Page 5 of 9 - NEETLab
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
The focal length of the objective of a terrestrial telescope is 80 cm
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 full length of the telescope will be . Options (a) 164 cm (b) 124 cm (c) 100 cm (d) 84 cm. Correct Answer: 164 cm. Explanation: No explanation available.
If the focal length of a concave mirror is 50 cm, then where should …
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 (d) 85 cm. Correct Answer: (-75 cm) Explanation: No explanation available. Be the first to write the explanation for this question by commenting below. Related Questions:
A person has a minimum distance of distinct vision as 50 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: 2 D. Explanation: No explanation available. Be the first to write the explanation for this question by commenting below. Related Questions:
Two closed organ pipes when sounded simultaneously give 4 …
⇒ 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 100 cm of potentiometer wire, respectively; Photoelectric current from a …
The unit of equivalent conductivity is - NEETLab
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 electrodes of Electrode of 1cm apart, the conductance of a volume of solution containing one Equivalent weight of dissolved substances is obtained.
A concave mirror ia placed over a beaker containing water of
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 top, then focal length of the mirror is . Options (a) 10 cm (b) 15 cm (c) 20 cm (d) 25 cm. Correct Answer: 20 cm. Explanation: No explanation available.
Two straight wires each 10cm long are parallel to one another and ...
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 experienced by either of the wires is . Options (a) 1.2×10⁻³ N (b) 12×10⁻³ N (c) 1.20×10⁻³ N (d) 10.2×10⁻³ N. Correct Answer: 1.2×10⁻³ N. Explanation: No ...
The current in the windings of a toroid is 2.0 A. There are
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 approximately . Options (a) 100 (b) 200 (c) 300 (d) 400. Correct Answer: 400. Explanation: No explanation available.