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National Science day

Total questions: 50

Worksheet time: 17mins

Name
Class
Date
1.

Define Vector

a)

Has only Direction

b)

Has only Magnitude

c)

Has Direction and magnitude

d)

has magnitude nor directin

2.

In which year was the first National Science Day celebrated in India?

a)

1971

b)

1975

c)

1985

d)

1995

3.

The Indian Space Research Organisation (ISRO) was established in which year?

a)

1950

b)

1960

c)

1970

d)

1980

4.

define scalar?

a)

has direction

b)

has direction and magnitude

c)

has only magnitude

d)

either direction nor magnitude

5.

Who among the following was the first Indian to receive a Nobel Prize in Chemistry?

a)

C.V. Raman

b)

Venkatraman Ramakrishnan

c)

Homi J. Bhabha

d)

Har Gobind Khorana

6.

formula for momentum p?

a)

=m/v

b)

=mv2

c)

=mv

d)

=m2v

7.

Who among the following is known for discovering the double-helix structure of DNA?

a)

James Watson and Francis Crick

b)

Francis Crick

c)

Rosalind Franklin

d)

Maurice Wilkins

8.

What are sounds below 20 Hz known as?

a)

ultrasonic

b)

infrasonic

c)

audible range

d)

none of the above

9.

  1. What type of electromagnetic radiation has the lowest frequency?

a)

Radio waves

b)

visible

c)

micro waves

d)

infrared rays

10.

What type of energy can be calculated using the formula U=mgh?

a)

Kinetic energy

b)

sound energy

c)

heat energy

d)

gravitational potential energy

11.

Out put of AND gate?

a)

Y=A+B

b)

Y=A.B

c)

Y=A̅

d)

Y=A+B+C

12.

farads law?

a)

Δ.E=ρ/ϵ0

b)

Δ Χ E=ρ/ϵ0

c)

Δ.B=0

d)

Δ Χ E=-dE/dt

13.

What is measured using an Ohmmeter?

a)

friction

b)

Pressure

c)

Resistance

d)

Resistivity

14.

what is the output of NOT gate?

a)

Y=A

b)

Y=B

c)

Y= A̅

d)

none of the above

15.

find out which is consist of highest energy range?

a)

UV rays

b)

X-rays

c)

Gamma rays

d)

Visible rays

16.

Gauss law in magnetostatics?

a)

Δ.E=ρ/ϵ0

b)

Δ.B=ρ/ϵ0

c)

Δ.E=0

d)

Δ.B=0

17.

Gauss law in electrostatics

a)

Δ.E=ρ/ϵ0

b)

Δ.B=0

c)

Δ.B=ρ/ϵ0

d)

Δ.E=0

18.

Brewster's law formula?

a)

μ= tanP

b)

μ= casP

c)

μ= sinP

d)

μ= cotP

19.

Malus law?

a)

I=I0 cos2θ

b)

I=cos2θ

c)

I=I0 sin2θ

d)

I=I0 tan2θ

20.

find out the universal gate?

a)

AND gate

b)

NAND gate

c)

OR gate

d)

Ex-OR gate

21.

20Hz to 20kHz range

a)

Infrasonic

b)

Ultrasonic

c)

Audible

d)

radio wave

22.

out put of NAND gate?

a)

Y=A.B

b)

Y=A+B

c)

Y= A̅B̅

d)

Y=A̅

23.

XOR gate output?

a)

Y=A.B

b)

Y=A+B

c)

Y=A̅B+B̅A

d)

Y=A̅B

24.

Who among the following was the first Indian to receive a Nobel Prize in Physics?

a)

C.V. Raman

b)

S. Chandrasekhar

c)

Homi J. Bhabha

d)

Subrahmanyan Chandrasekhar

25.

What is the SI unit of electric current?

a)

Volts

b)

Amps

c)

Ohms

d)

Watts

26.

What is the speed of light in a vacuum?

a)

299,792,458 m/s

b)

300,000,000 m/s

c)

200,000,000 m/s

d)

250,000,000 m/s

27.

What is the formula for calculating kinetic energy?

a)

KE = 1/2 mv^2

b)

KE = mgh

c)

KE = Fd

d)

KE = P/t

28.

Who among the following is known for the theory of relativity?

a)

Isaac Newton

b)

Albert Einstein

c)

Nikola Tesla

d)

Stephen Hawking

29.

What is the formula for calculating the area of a circle?

a)

A = πr2

b)

A = 2πr

c)

A = 1/2πr2

d)

A = πr

30.

Who is known for the discovery of the electron?

a)

Ernest Rutherford

b)

James Chadwick

c)

J.J. Thomson

d)

Niels Bohr

31.

What is the SI unit of force?

a)

Newton

b)

Joule

c)

Watt

d)

Pascal

32.

What is the SI unit of temperature?

a)

Celsius

b)

Fahrenheit

c)

Kelvin

d)

Rankine

33.

What is the formula for calculating work done?

a)

W = Fd

b)

W = mg

c)

W = P/t

d)

W = 1/2 mv^2

34.

Who among the following is known for the discovery of the neutron?

a)

Ernest Rutherford

b)

James Chadwick

c)

J.J. Thomson

d)

Niels Bohr

35.

Raman effect is scattering of ________

a)

Atoms

b)

Molecules

c)

Protons

d)

Photons

36.

The elastic scattering of photons is called as ______

a)

Atmospheric scattering

b)

Rayleigh Scattering

c)

Conserved Scattering

d)

Raman Scattering

37.

In Raman spectroscopy, the radiation lies in the ________

a)

Microwave Region

b)

Visible Region

c)

UV Region

d)

X-ray Region

38.

How many degrees of freedom does a chemical compound of N atoms have?

a)

2N

b)

2N + 1

c)

3N

d)

3N + 1

39.

In P-N junction diode when it occurs break down voltage

a)

Forward bias

b)

Reverse bias

c)

both forward and reverse bias

d)

None of the above

40.

when the particle moving in the space, it consists of how many degree of freedom?

a)

2 degrees of freedom

b)

3 degrees of freedom

c)

one degree of freedom

d)

6 degree of freedom

41.

Which of the following is the most electrically conductive?

a)

  1. Copper

b)

  1. Iron

c)

  1. Mercury

d)

  1. Silver

42.

If two wave sources have an identical frequency and waveform, they are

a)

  1. Contingent 

b)

  1. Cohesive 

c)

  1. Combative

d)

  1. Coherent

43.

Snell's law

a)

sin(i)/sin(r)

b)

sin (i)

c)

sin(r)

d)

cos(i)/cos(r)

44.

what is the value of refractive index of air?

a)

1.5

b)

2

c)

1

d)

1.33

45.

what is the formula of Refractive index?

a)

n=cv

b)

n=c/v

c)

n=v/c

d)

n=c

46.

when the ray enter from dancer medium to rarer medium is called for

a)

Total Internal reflection

b)

refraction

c)

transmitted

d)

absorption

47.

de Broglie wave length?

a)

λ=h/p

b)

λ=h/v

c)

λ=h/m

d)

λ=h/mv2

48.

formula of poynting theorem?

a)

S=(E×B)/ε0

b)

S=(E×B)/μ0

c)

S=(E×H)/μ0

d)

S=E×B

49.

Ruby laser is a

a)

continuous laser

b)

unform laser

c)

pulsed laser

d)

none of the above

50.

Δ×A=0

a)

Divergence

b)

Curl

c)

rotational

d)

irrotational

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