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A particle of mass m strikes another particle of same mass of rest. Find the angle between the velocities of particle after the collision, if the collision is elastic.

The angle formed is zero An elastic collision is a collision in which there is no net loss in kinetic energy in the system as a result of the... View Article

Magnetic field due to current carrying conductor depends on: (a) Current flowing through the conductor (b) Distance from the conductor (c) Length of the conductor (d) (a) and (b)

The correct answer is option (d) (a) and (b) Magnetic Field is the region around a magnetic material or a moving electric charge within which... View Article

The ratio of the circumference of a circle to the diameter of the circle is. (a) an integer (b) a rational number (c) an irrational number (is) a whole number

The ratio of the circumference of a circle to the diameter of the circle is. (c) an irrational number Circumference of the circle or... View Article

If the product of 2 numbers is 2-digit number, then both numbers are________

If the product of 2 numbers is 2-digit number, then both numbers are single digit numbers If the product of 2 numbers is 2-digit... View Article

_________ is the additive identity of rational numbers.

0is the additive identity of rational numbers. Additive identity of numbers, as the name suggests, is a property of numbers that are... View Article

A shopkeeper allows 20% off on the marked price of goods and still gets a profit of 25%. What is the actual cost to him of an article marked Rs. 500?

Given As per the given data Profit = 25% MP = 500 Discount = 20% Find out We have to determine the actual cost to him of an... View Article

If a,b,c are in G.P then loga x, logb x, logc x are in

If in a sequence of terms, each succeeding term is generated by multiplying each preceding term with a constant value, then the sequence is... View Article

Student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the lens_______

Student obtains a blurred image of a distant object on a screen using a convex lens. To obtain a distinct image on the screen he should move the... View Article

To determine the approximate value of the focal length of a given concave mirror, you focus the image of a distant object formed by the mirror on a screen. The image obtained on the screen, as compared to the object is always

To determine the approximate value of the focal length of a given concave mirror, you focus the image of a distant object formed by the mirror on... View Article

Prove that Sum of any two sides of a triangle is greater than the third side.

The triangle inequality theorem describes the relationship between the three sides of a triangle. According to this theorem, for any triangle,... View Article

The displacement current flows in the dielectric of a capacitor when the potential difference across its plates__________

The displacement current flows in the dielectric of a capacitor when the potential difference across its plates is increasing with time... View Article

The L.C.M. of two numbers is 495 and their H.C.F. is 5. If the sum of the two numbers is 100 then their difference is _____.

Given that According to the given data we get to know that LCM of two numbers = 495 HCF of two numbers = 5 Find out We have to determine the... View Article

Electromagnetic radiation having λ=310 A˙ is subjected to a metal sheet having work function = 12.8 eV. What will be the velocity of photo electrons having maximum kinetic energy?

The maximum kinetic energy (eV) in photoelectric effect is given as, K.E.= hν e −ϕ Where h is the Plank’s... View Article

A convex mirror forms the image of an object such that the distance of 10cm from a convex mirror of focal length 15cm Find the position and nature of the image.

A convex mirror is a type of spherical mirror in which the reflecting surface is the bulged out portion of the sphere, i.e. in this type of... View Article

Given that the number 35a64 is divisible by 3, where a is a digit, what are the possible values of a?

We know that if a number is divisible by 3, then sum of digits must be a multiple of 3. ∴ 3 + 5+a+6+4 = multiple of 3 The... View Article

If the radius of the earth were to shrink by one percent, its mass remaining the same, the acceleration due to gravity on the earth’s surface would

Acceleration due to gravity is represented by g. The standard value of g on the surface of the earth at sea level is... View Article

A line forms a triangle of area 54 √3 square units with the coordinate axes. Find the equation of the line if the perpendicular drawn from the origin to the line makes an angle of 60º with the X-axis

Given α=60∘ area of triangle=54√3 Find out We have to determine the equation of a straight line on which the perpendicular... View Article

A point charge q is placed at the corner of a cube with side l find flux through entire surface and flux through each face

Gauss Law states that the total electric flux out of a closed surface is equal to the charge enclosed divided by the permittivity. The... View Article

Given that two of the zeroes of the cubic poly-nomial ax3 bx² cx d are 0, the third zero is

The cubic polynomial is in the form ax3 + bx2 + cx + d and the zeroes are α, β, and γ. We know that the relation... View Article

The least number which when divided by 2, 3, 4, 5 and 6 leaves the remainder 1 in each case. If the same number is divided by 7 it leaves no remainder. The number is

Given The numbers 2,3,4,5 and 6 Find out We have to determine the least number which when divided by 2, 3, 4, 5, and 6 leaves 1 as a... View Article

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