Indian army has published the notification for SSC Tech 56 men and SSC Tech 27 women for the course commencing at OTA Chennai from April 2021
When a convex lens produces a real image of an object, the minimum distance between the object and image is equal to
the focal length of the convex lens
twice the focal length of the convex lens
four times the focal length of the covex lens
one half of the focal length of the convex lens
The direction of magnetic field at any location on the earth’s surface is commonly specified in terms of
field declination
field inclination
both field declination and field inclination
horizontal component of the field
A circuit has a fuse having a rating of 5 A, What is the maximum number of 100 W-220 V bulbs that can be safely connected in parallel in the circuit?
20
15
11
10
Which one of the following can extinguish fire more quickly?
Cold water
Boiling water
Hot water
Ice
In which of the following, heat loss is primarily not due to convection?
Land and sea breeze
Circulation of air around blast furnace
Heating of glass surface of a bulb due to current in filament
