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A telescope objective of focal length 1.0 m forms a real image of the moon 0.92 cm in diameter.
asked
Jan 4, 2018
in
Class 12
by
kratos
neet
optical instruments
aiims
ray optics
class-12
+1
vote
0
answers
The voltage across the 10W resistor in the given circuit is x volt.
asked
Jan 4, 2018
in
JEE
by
kratos
jee main 2021
jee
jee main
+1
vote
0
answers
The formula used to calculate the Boh’* radius is …… (a) rn = (-13.6)Z^2/n^2 eV atom^-1
asked
Jan 4, 2018
in
Class 11
by
kratos
quantum mechanical model of atom
class-11
+1
vote
0
answers
Let f(x) = x^2 and g(x) = 2x + 1 be two real functions. Find (f + g)(x), (f – g)(x), (fg)(x) and (f/g)(x).
asked
Jan 4, 2018
in
Class 11
by
kratos
class-11
functions
+1
vote
0
answers
When 22 L of hydrogen gas is mixed with 11.2 L of chlorine gas, each at STP, the ***** of HCl gas formed is equal to ……
asked
Jan 4, 2018
in
Chemistry
by
kratos
class-11
basic concepts of chemistry
chemical calculations
+1
vote
0
answers
A 0.24 g sample of compound of oxygen and boron was found by analysis to contain 0.096 g of boron and 0.144 g of oxygen.
asked
Jan 4, 2018
in
Chemistry
by
kratos
some basic concepts of chemistry
neet
cbse
aiims
class-9
atoms and molecules
+1
vote
0
answers
A small bulb is placed at the bottom of a tank containing water to a depth of 80 cm.
asked
Jan 4, 2018
in
JEE
by
kratos
light-reflection and refraction
cbse
ray optics and optical instruments
jee
optics
jee mains
class-12
geometrical optics
+2
votes
0
answers
Calculate AM, GM, and HM and also verify their relations among them for the following data: X 5 15 10 30 25 20 35 40
asked
Jan 4, 2018
in
Class 11
by
kratos
class-11
statistics
probability
+3
votes
0
answers
If vector a = 4i + 3j + k and vector b = i - 2k, then find |2b x a|.
asked
Jan 4, 2018
in
Class 12
by
kratos
class-12
vector
cross product
+1
vote
0
answers
Reduce each of the following expressions to the Sine And Cosine ofA single expression: 24 cos x + 7 sin x
asked
Jan 4, 2018
in
Class 11
by
kratos
class-11
trigonometric functions
trigonometry
+3
votes
0
answers
Write these percentage as decimals (i) 3 % (ii) 25 % (iii) 80 % (iv) 67 % (v) 17.5 %
asked
Jan 4, 2018
by
kratos
simple interest
class-7
percentage
+3
votes
0
answers
Write 5^th term from the end of the A.P. 3, 5, 7, 9, ...., 201.
asked
Jan 4, 2018
in
Class 10
by
kratos
class-10
arithmetic progression
+1
vote
0
answers
List the sign conventions that are followed in case of refraction of light through spherical lenses.
asked
Jan 4, 2018
in
Class 12
by
kratos
light – reflection and refraction
class-12
class-10
cbse
+2
votes
0
answers
Consider a Carnot’* cycle operating between T1 = 500 K and T2 = 300 K producing 1 KJ of mechanical work per cycle.
asked
Jan 4, 2018
in
JEE
by
kratos
thermodynamics
class-11
jee
jee mains
+3
votes
0
answers
(a) Find limx→0f(x) (b) Find f(0). (c) Find P.
asked
Jan 4, 2018
in
Class 12
by
kratos
class-12
differentiability
continuity
+1
vote
0
answers
A capsule of medicine is in the shape of a sphere of diameter 3.5 mm. How much medicine (in mm^3) is needed to full this capsule ?
asked
Jan 4, 2018
in
Class 10
by
kratos
surface areas and volumes of a sphere
class-9
surface areas and volumes
class-10
+3
votes
0
answers
Convert 2 : 5 ratios into percentage.
asked
Jan 3, 2018
by
kratos
class-8
comparison of quantities
+2
votes
0
answers
Under an external electric field electrons drift slowly inside the conductor. 1. The velocity of drift is
asked
Jan 3, 2018
in
Class 12
by
kratos
class-12
current electricity
cbse
+3
votes
0
answers
67.2 litres of hydrogen combines with 44.8 litres of nitrogen to form ammonia under specific conditions as:
asked
Jan 3, 2018
in
Class 10
by
kratos
estimation
stoichiometry
class-6
class-10
icse
mole concept
chemical reactions and equations
+2
votes
0
answers
The plane passing through the points (1, 2, 1), (2, 1, 2) and parallel to the line, 2x = 3y, z = 1 also passes through the point :
asked
Jan 3, 2018
in
JEE
by
kratos
jee main 2020
jee mains 2019
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