A. 106 photons of wavelength 200nm (UV)

B. 106 photons of wavelength 50?m (infrared)

D. 102 photons of wavelength 1nm (x-rays)

B. its energy levels are too close to each other

C. its energy levels are too far apart

D. it is too small in size

A. Accurate and precise

B. None of these

D. Accurate

B. 6?

C. 3?

D. ?

A. ?E = h/m?c(1-cos?)

B. mc2 = hv

C. Any of above

B. Pressure

C. Loudness

D. Force

A. 3.40 eV

C. 1.51 eV

D. 13.60 eV

A. Inadequate technique

B. Natural variation of the object to be measured

C. Limitation of an instrument

B. at the principal focus

C. beyond 2 f

D. between principal focus and center of curvature

A. A unit of wavelength

B. A unit of energy

C. A positively charged particle

A. watt

B. horsepower

D. meter

A. S.H.M

B. Vibratory motion

D. None S.H.M

A. h

C. E

D. G

A. depends on situation

B. variable

D. constant

B. Positive rays

C. Cathode rays

D. Beta rays

A. 10-8 sec

B. 10-5 sec

D. 10-4 sec

B. Ionization of atoms

C. All the above

D. Heating the filament

A. Moment

B. Momentum

D. None of these

A. capacitor

B. on switch

D. inductor

A. 1

C. 0

D. 2

B. rapid expansion of air

C. cloud formation in the atmosphere

D. rapid escape of air from a burst tyre

A. 3.1810-31JK-1

B. 3.1810-23JK-1

D. 1.3810-31JK-1

A. Equal to D.C. value

B. Less than D.C. value

C. Zero

B. Chemical processes

C. Electrical processes

D. Frictional process

B. holes in n-type and p-type

C. free electrons in n-type and p-type

D. free electrons in n-type and holes in p-type

B. Its obeys Newtons third law

C. Its obeys Newtons second law

D. Its works equals the change in the kinetic energy of the particle.

A. Zero

B. E

D. E/(2)^1/2

A. Solar cells.

B. The photo diodes

C. The switch

A. Hyperbolic

B. Made of two straight line segments

C. Circular

B. The light emitting diodes

C. Photo voltaic cell

D. Solar cells.

A. MLT

C. ML-1T-1

D. ML-2T-2

A. No antiparticle of electron is present

B. It does emit radiation

C. Its size as compare to proton and neutron is very small

B. Plasma physics

C. Atomic physics

D. Biophysics

A. 0.0001mm

B. 0.01mm

D. 0.001mm

A. 5 H

C. 5000 H

D. zero

A. adiabatic processes

B. isochoric processes

D. isobaric processes

A. All of the above

B. Heat exchange process

C. Heating process

A. Momentum

B. Energy

D. Work

A. Prism

C. Slabs

D. Lens

A. Both

B. Non of these

D. Divisible

A. 1:02

B. 4:01

C. 2:01

A. pressure

B. volume

C. heat supply

B. None of these

C. Due to motion of object

D. Due to gravity

A. It is sum of all forms of energies associated with molecules of a system

B. It is a state function of a system

C. It is proportional to transnational K.E of the molecules

B. 300 C m²

C. 200 C m²

D. 100 C m²

B. ?

C. ?/8

D. ?/4

A. mix

B. any of above

C. p

A. momentum

B. velocity

D. mass

B. All of these

C. Heavy Water

D. Graphite

A. We face sun and raindrops

C. The sky remains clear and the sun is at lower position in the sky

D. In light rainfall, we face Sun