For a particular tube, among six harmonic frequencies below 1000 Hz, only four harmonic frequencies are given: 300 Hz, 600 Hz, 750 Hz and 900 Hz. What are the two other frequencies missing from this list?

A container has one mole of monoatomic ideal gas. Each molecule has f degrees of freedom. What is the ratio of \(\gamma =\frac { { C }_{ p } }{ { C }_{ V } } \) 

When a uniform rod is heated, which of the following quantity of the rod will increase

Which of the following is not a scalar?

Two projectiles of same mass and with same velocity are thrown at an angle of 60° and 30° with the horizontal then which of the following will remain same?

The distance travelled by a body, falling freely from rest in t = 1s, t = 2s and t = 3s are in the ratio of ______________.

Spreading smoke of incense stick is an example of ___________.

A car is moving along a straight road with a uniform acceleration. It passes through two points P and Q separated by a distance with velocity 30 km/h and 40 km/h respectively. The velocity of the car midway between P and Q is ______________.

The water drop falls at regular intervals from a tap 5 m above the ground. The third drop is leaving the tap at instant the first drop touches the ground. How far above the ground is the second drop at that instant?

A particle is thrown vertically upward. Its velocity at half of the height is 10 m/s, then the maximum height attained by it __________ (g = 10 m/s²)

Two bodies A (of mass 1 kg) and B (of mass 3 kg) are dropped from heights of 16 m and 25 m, respectively. The ratio of the time taken by them to reach the ground is _____________.

A particle starts its motion from rest under the action of a constant force. If the distance covered in first 10 seconds is S₁ and that covered in the first 20 seconds is S₂, then ____________.

Which pair do not have equal dimensions?

A stone falls freely under gravity. It covers distances h₁, h₂ and h₃ in the first 5 seconds, the next 5 seconds and the next 5 seconds respectively. The relation between h₁, h₂ and h₃is ____________.

A stone is thrown vertically upwards with certain initial speed. If another stone of the same mass is projected at angle of 30° with the horizontal with the same initial speed, the ratio of their potential energies at their highest points is ________________.

The velocity-time graph of a particle moving in a straight line is given in the figure. The acceleration of the particle at time t = 9s is

Slope of displacement-time graph at any instant gives ____________.

Angle of inclination of the resultant when two vectors act at right angle to each other is ______________.

According to parallelogram law of vector addition, the R _____________.

In which direction of the motion of the particle does centripetal force act?

During a projectile motion if the maximum height equals the horizontal range, then the angle of projection with the horizontal is ______________.

The motion of a rocket is based on the principle of conservation of _____________.

A heavy iron rod of weight W is having its one end on the ground and the other on the shoulder of a man. The rod makes an angle ፀ with the horizontal. What is the weight experienced by the man?

The density of a cube is measured by measuring its mass and length of its side. If the maximum error in the measurement of mass and length are 5% and 3% respectively, the maximum error in the measurement of density is _____________.

How many light years make 1 per sec?