Q. Which one of the following statements about magnetic field lines is not correct ?
1) They can emanate from a point
2) They do not cross each other
3) Field lines between two poles cannot be precisely straight lines at the ends
4) There are no field lines within a bar magnet
Q. Two convex lenses with power 2 dioptre are kept in contact with each other. The focal length of the combined lens system is -
1) 0.10 m
2) 2 m
3) 4 m
4) 0.25 m
Q. Which one of the following alkali metals has lowest melting point ?
1) Sodium
2) Potassium
3) Rubidium
4) Caesium
Q. Which one of the following metals is used in the filaments of photo-electric cells that convert light energy into electric energy ?
1) Tungsten
2) Copper
3) Rubidium
4) Aluminium
Q. Which of the following statements about a fluid at rest in a cup is/ are correct ?
1. Pressure is same at all the points in the fluid.
2. Pressure is exerted on the walls.
3. Pressure exists everywhere in the fluid.
Select the correct answer using the code given below :
1) 1 and 2 only
2) 2 and 3 only
3) 1 only
4) 1, 2 and 3
Q. Which one of the following devices is used to measure atmospheric pressure ?
1) Ammeter
2) Barometer
3) Potentiometer
4) Lactometer
Q. What is the net force experienced by a bar magnet placed in a uniform magnetic field ?
1) Zero
2) Depends upon length of the magnet
3) Never zero
4) Depends upon temperature
Q. Which one of the following has maximum inertia ?
1) An atom
2) A molecule
3) A one-rupee coin
4) A cricket ball
Q. Which one of the following is the value of 1 kWh of energy coverted into joules ?
1) 1.8 x 106 J
2) 3.6 x 106 J
3) 6.0 x 106 J
4) 7.2 x 106 J
Q. The wavelength of visible spectrum is in the range -
1) 1300 Å - 3900 Å
2) 3900 Å - 7600 Å
3) 7800 Å - 8200 Å
4) 8500 Å - 9800 Å
Interior design is a fun and creative field. It mixes art and practicality to make spaces look good and work well. With more people wanting great places to live and work, the need for skilled interior designers is rising. Let’s look at what it takes to have a career in interior design, including nee →
Foundation Date: December 8, 1991 Headquarters: The Republic of Belarus Executive Secretaries: Sergei Lebedev Member Countries: 12 Commonwealth of Independent States (CIS) was established on December 8, 1991, and the leaders of the Republic of Belarus, the Russian Federation, and Ukraine signed an a →
In 2009, an unknown programmer by the name of Satoshi Nakamoto put forward a whitepaper that proposed a creation of new form of digital currency - cryptocurrency. Cryptocurrency functions the same way as regular currencies do in that its used as a means of exchange, unit of account and a store of va →
Headquarter: New Delhi Function and Objective of the Organization: The Food Safety and Standards Authority of India (FSSAI)has been established under Food Safety and Standards Act, 2006 which consolidates various acts & orders that have hitherto handled food-related issues in various Ministries →
If you contribute your content to our site. Please mail us your content to editor@onlinegk.net