Recent questions in Engineering Entrance Exams

0 votes

1 answer 820 views

The magnetic flux linked with a coil (in Wb) is given by the equation ϕ = 5t^2 + 3t + 16 The magnitude of induced

asked May 13, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 287 views

A beam of protons with speed 4 × 105 ms–1 enters a uniform magnetic field of 0.3T at an angle of 60º

asked May 13, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 735 views

In a Young's double slit experiment, light of 500 nm is used to produce an interference pattern.

asked May 13, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 983 views

A plano-convex lens of unknown material and unknown focal length is given.

asked May 10, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 557 views

A cylindrical vessel containing a liquid is rotated about its axis so that the liquid rises at its sides as shown in the figure. The radius of vessel is

asked May 5, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 500 views

If intensity after passing through a polaroid is 100 Lumen. Now this same polaroid is rotated by 30° about it's axis then

asked May 5, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 692 views

An object when placed at 10 cm from convex lens & when placed at 20 cm from it, image produced has same height. Find focal length of lens?

asked May 1, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 1.5k views

A screw gauge shows 8 division on circular scale below reference line when no object is placed. Number of division on circular scale

asked May 1, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 776 views

Two particles having mass M1 = 4 gm, M2 = 16 gm. If kinetic energy of both the particle is equal then ratio of their momentum is n : 2 then n is:

asked May 1, 2021 in Physics by Doubtly (98.9k points)

+1 vote

1 answer 660 views

Formation of real image using a biconvex lens is shown below If the whole set up is immersed in water without disturbing the object and the

asked Apr 19, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 383 views

A load of mass M kg is suspended from a steel wire of length 2m and radius 1.0mm in Searle's apparatus

asked Apr 19, 2021 in Physics by Doubtly (98.9k points)

+1 vote

1 answer 921 views

The image of an object, formed by a plano-convex lens at a distance of 8m behind the lens, is real and is one third the size of the object.

asked Apr 18, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 324 views

An electromagnetic wave can be produced, when charge is Amoving with a constant velocity

asked Apr 16, 2021 in Physics by Topper11 (2.8k points)

+1 vote

1 answer 372 views

A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature T.

asked Apr 16, 2021 in Physics by Doubtly (98.9k points)

0 votes

1 answer 602 views

The radius in kilometre to which the present radius of earth (R = 6400 km) to be compressed so that the escape velocity is increased 10 times is ____________